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Science Clinic => Chemistry => Topic started by: cnetterville on Nov 18, 2019

Title: Use the standard reaction enthalpies given below to determine DrH for the following reaction:4SO3(g) ...
Post by: cnetterville on Nov 18, 2019

Question 1

Use the standard reaction enthalpies given below to determine DrH° for the following reaction:

2S(s) + 3O2(g) → 2SO3(g) DrH° = ?
Given:
SO2(g) → S(s) + O2(g) DrH° = +296.8 kJ
2SO2(g) + O2(g) → 2SO3(g)DrH° = -197.8 kJ

◦ -692.4 kJ mol-1
◦ -791.4 kJ mol-1
◦ -494.6 kJ mol-1
◦ -293.0 kJ mol-1
◦ 1583 kJ mol-1

Question 2

Use the standard reaction enthalpies given below to determine DrH° for the following reaction:

4SO3(g) → 4S(s) + 6O2(g) DrH° = ?
Given:
SO2(g) → S(s) + O2(g) DrH° = +296.8 kJ
2SO2(g) + O2(g) → 2SO3(g)DrH° = -197.8 kJ

◦ -494.6 kJ mol-1
◦ 1583 kJ mol-1
◦ -293.0 kJ mol-1
◦ -791.4 kJ mol-1
◦ -692.4 kJ mol-1
Title: Use the standard reaction enthalpies given below to determine DrH for the following reaction:4SO3(g) ...
Post by: yifu223 on Nov 18, 2019

Answer 1

-791.4 kJ mol-1

Answer 2

1583 kJ mol-1