{"id":589,"date":"2016-01-04T16:11:53","date_gmt":"2016-01-04T16:11:53","guid":{"rendered":"https:\/\/courses.candelalearning.com\/chemistry111labs1x1xmaster\/?post_type=chapter&p=589"},"modified":"2016-01-07T01:13:23","modified_gmt":"2016-01-07T01:13:23","slug":"lab-10-worksheet","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/chemistry1labs\/chapter\/lab-10-worksheet\/","title":{"raw":"Lab 10 Worksheet","rendered":"Lab 10 Worksheet"},"content":{"raw":"
Download the .pdf file of the lab handout\u00a0here<\/span><\/a>.<\/span><\/div>\r\n

Experimental Data and Results<\/strong><\/h2>\r\n*Make sure you show all work and calculations to receive full credit.<\/em>\r\n\r\nFor each problem, find the \u0394H for the target reaction below, given the following step reactions and subsequent \u0394H values:\r\n
\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 1<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\nPCl5<\/sub>(g) \u2192 PCl3<\/sub>(g) + Cl2<\/sub>(g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nP4<\/sub>(s) + 6Cl2<\/sub>(g) \u2192 4PCl3<\/sub>(g)<\/td>\r\n\u0394H = -2439 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n4PCl5<\/sub>(g) \u2192 P4<\/sub>(s) + 10Cl2<\/sub>(g)<\/td>\r\n\u0394H = 3438 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n<\/div>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 2<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\n2CO2<\/sub>(g) + H2<\/sub>O(g) \u2192 C2<\/sub>H2<\/sub>(g) + 5\/2O2<\/sub>(g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nC2<\/sub>H2<\/sub>(g) + 2H2<\/sub>(g) \u2192 C2<\/sub>H6<\/sub>(g)<\/td>\r\n\u0394H = -94.5 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nH2<\/sub>O(g) \u2192 H2<\/sub>(g) + 1\/2O2<\/sub> (g)<\/td>\r\n\u0394H = 71.2 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n\u00a02C2<\/sub>H6<\/sub>(g) + 7O2<\/sub>(g) \u2192 4CO2<\/sub>(g) + 6H2<\/sub>O(g)<\/td>\r\n\u0394H =-566 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 3<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\nN2<\/sub>H4<\/sub>(l) + H2<\/sub>(g) \u2192 2NH3<\/sub>(g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nN2<\/sub>H4<\/sub>(l) + CH4<\/sub>O(l) \u2192 CH2<\/sub>O(g) + N2<\/sub>(g) + 3H2<\/sub> (g)<\/td>\r\n\u0394H = -37 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nN2<\/sub>(g) + 3H2<\/sub>(g) \u2192 2NH3<\/sub>(g)<\/td>\r\n\u0394H = -46 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nCH4<\/sub>O(l) \u2192 CH2<\/sub>O(g) + H2<\/sub>(g)<\/td>\r\n\u0394H = -65 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 4<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\nH2<\/sub>SO4<\/sub>(l) \u2192 SO3<\/sub>(g) + H2<\/sub>O(g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nH2<\/sub>S(g) + 2O2(g) \u2192 H2<\/sub>SO4<\/sub>(l)<\/td>\r\n\u0394H = -235.5 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nH2<\/sub>S(g) + 2O2<\/sub>(g) \u2192 SO3<\/sub>(g) + H2<\/sub>O(l)<\/td>\r\n\u0394H = -207 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nH2<\/sub>O(l) \u2192 H2<\/sub>O(g)<\/td>\r\n\u0394H = 44 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 5<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\n2C2<\/sub>H4<\/sub>O(l) + 2H2<\/sub>O(l) \u2192 2C2<\/sub>H6<\/sub>O(l) + O2<\/sub>(g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nC2<\/sub>H6<\/sub>O(l) + 3O2<\/sub>(g) \u2192 2CO2<\/sub>(g) + 3H2<\/sub>O(l)<\/td>\r\n\u0394H = -685 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nC2<\/sub>H4<\/sub>O(l) + 5\/2O2<\/sub>(g) \u2192 2CO2<\/sub>(g) + 2H2<\/sub>O(l)<\/td>\r\n\u0394H = -583.5 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 6<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\nN2<\/sub>(g) + 2O2<\/sub>(g) \u2192 2NO2<\/sub>(g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nN2<\/sub>(g) + 3H2<\/sub>(g) \u2192 2NH3<\/sub>(g)<\/td>\r\n\u0394H = -115 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n2NH3<\/sub>(g) + 4H2<\/sub>O(l) \u2192 2NO2<\/sub>(g) + 7H2<\/sub>(g)<\/td>\r\n\u0394H = -142.5 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nH2<\/sub>O(l) \u2192 H2<\/sub>(g) + 1\/2O2<\/sub>(g)<\/td>\r\n\u0394H = -43.7 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 7<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\nCO2<\/sub>(g) \u2192 C(s) + O2<\/sub>(g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nH2<\/sub>O(l) \u2192 H2<\/sub>(g) + 1\/2O2<\/sub>(g)<\/td>\r\n\u0394H = 643 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nC2<\/sub>H6<\/sub>(g) \u2192 2C(s) + 3H2<\/sub>(g)<\/td>\r\n\u0394H = 190.6 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n2CO2<\/sub>(g) + 3H2<\/sub>O(l) \u2192 C 2H6<\/sub>(g) + 7\/2O2<\/sub>(g)<\/td>\r\n\u0394H = 3511.1 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 8<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\nN2<\/sub>H4<\/sub>(l) + CH4<\/sub>O(l) \u2192 CH2<\/sub>O(g) + N2<\/sub>(g) + 3H2<\/sub> (g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\n2NH3<\/sub>(g) \u2192 N2<\/sub>H4<\/sub>(l) + H2<\/sub>(g)<\/td>\r\n\u0394H = 22.5 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n2NH3<\/sub>(g) \u2192 N2<\/sub>(g) + 3H2<\/sub>(g)<\/td>\r\n\u0394H = 57.5 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nCH2<\/sub>O(g) + H2<\/sub>(g) \u2192 CH4<\/sub>O(l)<\/td>\r\n\u0394H = 81.2 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 9<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\n1\/2H2<\/sub>(g) + 1\/2Cl2<\/sub>(g) \u2192 HCl(g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nCOCl2<\/sub>(g) + H2<\/sub>O(l) \u2192 CH2<\/sub>Cl2<\/sub>(l) + O2<\/sub>(g)<\/td>\r\n\u0394H = -47.5 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n2HCl(g) + 1\/2O2<\/sub>(g) \u2192 H2<\/sub>O(l) + Cl2<\/sub>(g)<\/td>\r\n\u0394H = 105 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nCH2<\/sub>Cl2<\/sub>(l) + H2<\/sub>(g) + 3\/2O2<\/sub>(g) \u2192 COCl2<\/sub>(g) + 2H2<\/sub>O(l)<\/td>\r\n\u0394H = -402.5 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 10<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\nC2<\/sub>H2<\/sub>(g) + 5\/2O2<\/sub>(g) \u2192 2CO2<\/sub>(g) + H2<\/sub>O(g)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nC2<\/sub>H6<\/sub>(g) \u2192 C2<\/sub>H2<\/sub>(g) + 2H2<\/sub>(g)<\/td>\r\n\u0394H = 283.5 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nH2<\/sub>(g) + 1\/2O2<\/sub>(g) \u2192 H2<\/sub>O(g)<\/td>\r\n\u0394H = -213.7 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n2CO2<\/sub>(g) + 3H2<\/sub>O(g) \u2192 C2<\/sub>H6<\/sub>(g) + 7\/2O2<\/sub>(g)<\/td>\r\n\u0394H = 849 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 11<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\nHCl(g) + NaNO2<\/sub>(s) \u2192 HNO2<\/sub>(l) + NaCl(s)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\n2NaCl(s) + H2<\/sub>O(l) \u2192 2HCl(g) + Na2<\/sub>O(s)<\/td>\r\n\u0394H = 507 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nNO(g) + NO2<\/sub>(g) + Na2<\/sub>O(s) \u2192 2NaNO2<\/sub>(s)<\/td>\r\n\u0394H = -427 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nNO(g) + NO2<\/sub>(g) \u2192 N2<\/sub>O(g) + O2<\/sub>(g)<\/td>\r\n\u0394H = -43 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n2HNO2<\/sub>(l) \u2192 N2<\/sub>O(g) + O2<\/sub>(g) + H2<\/sub>O(l)<\/td>\r\n\u0394H = 34 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Problem 12<\/th>\r\n<\/tr>\r\n
Target Reaction:<\/td>\r\nZn(s) + 1\/8S8<\/sub>(s) + 2O2<\/sub>(g) \u2192 ZnSO4<\/sub>(s)<\/td>\r\n<\/td>\r\n<\/tr>\r\n
Step Reactions:<\/td>\r\nZn(s) + 1\/8S8<\/sub>(s) \u2192 ZnS(s)<\/td>\r\n\u0394H = -183.92 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n2ZnS(s) + 3O2<\/sub>(g) \u2192 2ZnO(s) + 2SO2<\/sub>(g)<\/td>\r\n\u0394H = -927 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n2SO2<\/sub>(g) + O2<\/sub>(g) \u2192 2SO3<\/sub>(g)<\/td>\r\n\u0394H = -196.04 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\nZnO(s) + SO3<\/sub>(g) \u2192 ZnSO4<\/sub> (s)<\/td>\r\n\u0394H = -230.32 kJ<\/td>\r\n<\/tr>\r\n
<\/td>\r\n<\/td>\r\nAnswer______________<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n ","rendered":"
Download the .pdf file of the lab handout\u00a0here<\/span><\/a>.<\/span><\/div>\n

Experimental Data and Results<\/strong><\/h2>\n

*Make sure you show all work and calculations to receive full credit.<\/em><\/p>\n

For each problem, find the \u0394H for the target reaction below, given the following step reactions and subsequent \u0394H values:<\/p>\n

\n\n\n\n\n\n\n\n
Problem 1<\/th>\n<\/tr>\n
Target Reaction:<\/td>\nPCl5<\/sub>(g) \u2192 PCl3<\/sub>(g) + Cl2<\/sub>(g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nP4<\/sub>(s) + 6Cl2<\/sub>(g) \u2192 4PCl3<\/sub>(g)<\/td>\n\u0394H = -2439 kJ<\/td>\n<\/tr>\n
<\/td>\n4PCl5<\/sub>(g) \u2192 P4<\/sub>(s) + 10Cl2<\/sub>(g)<\/td>\n\u0394H = 3438 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n<\/div>\n\n\n\n\n\n\n\n\n
Problem 2<\/th>\n<\/tr>\n
Target Reaction:<\/td>\n2CO2<\/sub>(g) + H2<\/sub>O(g) \u2192 C2<\/sub>H2<\/sub>(g) + 5\/2O2<\/sub>(g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nC2<\/sub>H2<\/sub>(g) + 2H2<\/sub>(g) \u2192 C2<\/sub>H6<\/sub>(g)<\/td>\n\u0394H = -94.5 kJ<\/td>\n<\/tr>\n
<\/td>\nH2<\/sub>O(g) \u2192 H2<\/sub>(g) + 1\/2O2<\/sub> (g)<\/td>\n\u0394H = 71.2 kJ<\/td>\n<\/tr>\n
<\/td>\n\u00a02C2<\/sub>H6<\/sub>(g) + 7O2<\/sub>(g) \u2192 4CO2<\/sub>(g) + 6H2<\/sub>O(g)<\/td>\n\u0394H =-566 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n
Problem 3<\/th>\n<\/tr>\n
Target Reaction:<\/td>\nN2<\/sub>H4<\/sub>(l) + H2<\/sub>(g) \u2192 2NH3<\/sub>(g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nN2<\/sub>H4<\/sub>(l) + CH4<\/sub>O(l) \u2192 CH2<\/sub>O(g) + N2<\/sub>(g) + 3H2<\/sub> (g)<\/td>\n\u0394H = -37 kJ<\/td>\n<\/tr>\n
<\/td>\nN2<\/sub>(g) + 3H2<\/sub>(g) \u2192 2NH3<\/sub>(g)<\/td>\n\u0394H = -46 kJ<\/td>\n<\/tr>\n
<\/td>\nCH4<\/sub>O(l) \u2192 CH2<\/sub>O(g) + H2<\/sub>(g)<\/td>\n\u0394H = -65 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n
Problem 4<\/th>\n<\/tr>\n
Target Reaction:<\/td>\nH2<\/sub>SO4<\/sub>(l) \u2192 SO3<\/sub>(g) + H2<\/sub>O(g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nH2<\/sub>S(g) + 2O2(g) \u2192 H2<\/sub>SO4<\/sub>(l)<\/td>\n\u0394H = -235.5 kJ<\/td>\n<\/tr>\n
<\/td>\nH2<\/sub>S(g) + 2O2<\/sub>(g) \u2192 SO3<\/sub>(g) + H2<\/sub>O(l)<\/td>\n\u0394H = -207 kJ<\/td>\n<\/tr>\n
<\/td>\nH2<\/sub>O(l) \u2192 H2<\/sub>O(g)<\/td>\n\u0394H = 44 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n
Problem 5<\/th>\n<\/tr>\n
Target Reaction:<\/td>\n2C2<\/sub>H4<\/sub>O(l) + 2H2<\/sub>O(l) \u2192 2C2<\/sub>H6<\/sub>O(l) + O2<\/sub>(g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nC2<\/sub>H6<\/sub>O(l) + 3O2<\/sub>(g) \u2192 2CO2<\/sub>(g) + 3H2<\/sub>O(l)<\/td>\n\u0394H = -685 kJ<\/td>\n<\/tr>\n
<\/td>\nC2<\/sub>H4<\/sub>O(l) + 5\/2O2<\/sub>(g) \u2192 2CO2<\/sub>(g) + 2H2<\/sub>O(l)<\/td>\n\u0394H = -583.5 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n
Problem 6<\/th>\n<\/tr>\n
Target Reaction:<\/td>\nN2<\/sub>(g) + 2O2<\/sub>(g) \u2192 2NO2<\/sub>(g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nN2<\/sub>(g) + 3H2<\/sub>(g) \u2192 2NH3<\/sub>(g)<\/td>\n\u0394H = -115 kJ<\/td>\n<\/tr>\n
<\/td>\n2NH3<\/sub>(g) + 4H2<\/sub>O(l) \u2192 2NO2<\/sub>(g) + 7H2<\/sub>(g)<\/td>\n\u0394H = -142.5 kJ<\/td>\n<\/tr>\n
<\/td>\nH2<\/sub>O(l) \u2192 H2<\/sub>(g) + 1\/2O2<\/sub>(g)<\/td>\n\u0394H = -43.7 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n
Problem 7<\/th>\n<\/tr>\n
Target Reaction:<\/td>\nCO2<\/sub>(g) \u2192 C(s) + O2<\/sub>(g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nH2<\/sub>O(l) \u2192 H2<\/sub>(g) + 1\/2O2<\/sub>(g)<\/td>\n\u0394H = 643 kJ<\/td>\n<\/tr>\n
<\/td>\nC2<\/sub>H6<\/sub>(g) \u2192 2C(s) + 3H2<\/sub>(g)<\/td>\n\u0394H = 190.6 kJ<\/td>\n<\/tr>\n
<\/td>\n2CO2<\/sub>(g) + 3H2<\/sub>O(l) \u2192 C 2H6<\/sub>(g) + 7\/2O2<\/sub>(g)<\/td>\n\u0394H = 3511.1 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n
Problem 8<\/th>\n<\/tr>\n
Target Reaction:<\/td>\nN2<\/sub>H4<\/sub>(l) + CH4<\/sub>O(l) \u2192 CH2<\/sub>O(g) + N2<\/sub>(g) + 3H2<\/sub> (g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\n2NH3<\/sub>(g) \u2192 N2<\/sub>H4<\/sub>(l) + H2<\/sub>(g)<\/td>\n\u0394H = 22.5 kJ<\/td>\n<\/tr>\n
<\/td>\n2NH3<\/sub>(g) \u2192 N2<\/sub>(g) + 3H2<\/sub>(g)<\/td>\n\u0394H = 57.5 kJ<\/td>\n<\/tr>\n
<\/td>\nCH2<\/sub>O(g) + H2<\/sub>(g) \u2192 CH4<\/sub>O(l)<\/td>\n\u0394H = 81.2 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n
Problem 9<\/th>\n<\/tr>\n
Target Reaction:<\/td>\n1\/2H2<\/sub>(g) + 1\/2Cl2<\/sub>(g) \u2192 HCl(g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nCOCl2<\/sub>(g) + H2<\/sub>O(l) \u2192 CH2<\/sub>Cl2<\/sub>(l) + O2<\/sub>(g)<\/td>\n\u0394H = -47.5 kJ<\/td>\n<\/tr>\n
<\/td>\n2HCl(g) + 1\/2O2<\/sub>(g) \u2192 H2<\/sub>O(l) + Cl2<\/sub>(g)<\/td>\n\u0394H = 105 kJ<\/td>\n<\/tr>\n
<\/td>\nCH2<\/sub>Cl2<\/sub>(l) + H2<\/sub>(g) + 3\/2O2<\/sub>(g) \u2192 COCl2<\/sub>(g) + 2H2<\/sub>O(l)<\/td>\n\u0394H = -402.5 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n
Problem 10<\/th>\n<\/tr>\n
Target Reaction:<\/td>\nC2<\/sub>H2<\/sub>(g) + 5\/2O2<\/sub>(g) \u2192 2CO2<\/sub>(g) + H2<\/sub>O(g)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nC2<\/sub>H6<\/sub>(g) \u2192 C2<\/sub>H2<\/sub>(g) + 2H2<\/sub>(g)<\/td>\n\u0394H = 283.5 kJ<\/td>\n<\/tr>\n
<\/td>\nH2<\/sub>(g) + 1\/2O2<\/sub>(g) \u2192 H2<\/sub>O(g)<\/td>\n\u0394H = -213.7 kJ<\/td>\n<\/tr>\n
<\/td>\n2CO2<\/sub>(g) + 3H2<\/sub>O(g) \u2192 C2<\/sub>H6<\/sub>(g) + 7\/2O2<\/sub>(g)<\/td>\n\u0394H = 849 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n
Problem 11<\/th>\n<\/tr>\n
Target Reaction:<\/td>\nHCl(g) + NaNO2<\/sub>(s) \u2192 HNO2<\/sub>(l) + NaCl(s)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\n2NaCl(s) + H2<\/sub>O(l) \u2192 2HCl(g) + Na2<\/sub>O(s)<\/td>\n\u0394H = 507 kJ<\/td>\n<\/tr>\n
<\/td>\nNO(g) + NO2<\/sub>(g) + Na2<\/sub>O(s) \u2192 2NaNO2<\/sub>(s)<\/td>\n\u0394H = -427 kJ<\/td>\n<\/tr>\n
<\/td>\nNO(g) + NO2<\/sub>(g) \u2192 N2<\/sub>O(g) + O2<\/sub>(g)<\/td>\n\u0394H = -43 kJ<\/td>\n<\/tr>\n
<\/td>\n2HNO2<\/sub>(l) \u2192 N2<\/sub>O(g) + O2<\/sub>(g) + H2<\/sub>O(l)<\/td>\n\u0394H = 34 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n
Problem 12<\/th>\n<\/tr>\n
Target Reaction:<\/td>\nZn(s) + 1\/8S8<\/sub>(s) + 2O2<\/sub>(g) \u2192 ZnSO4<\/sub>(s)<\/td>\n<\/td>\n<\/tr>\n
Step Reactions:<\/td>\nZn(s) + 1\/8S8<\/sub>(s) \u2192 ZnS(s)<\/td>\n\u0394H = -183.92 kJ<\/td>\n<\/tr>\n
<\/td>\n2ZnS(s) + 3O2<\/sub>(g) \u2192 2ZnO(s) + 2SO2<\/sub>(g)<\/td>\n\u0394H = -927 kJ<\/td>\n<\/tr>\n
<\/td>\n2SO2<\/sub>(g) + O2<\/sub>(g) \u2192 2SO3<\/sub>(g)<\/td>\n\u0394H = -196.04 kJ<\/td>\n<\/tr>\n
<\/td>\nZnO(s) + SO3<\/sub>(g) \u2192 ZnSO4<\/sub> (s)<\/td>\n\u0394H = -230.32 kJ<\/td>\n<\/tr>\n
<\/td>\n<\/td>\nAnswer______________<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\t\t\t

\n\t\t\t

Candela Citations<\/h3>\n\t\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t\t
CC licensed content, Original<\/div>