7. Consider the following balanced thermochemical equationfor a reaction sometimes use for H2S production: %S8(s) + H2(g) → H2S(g) AHrxn = -20.2 kJ (a) Is this an exothermic or endothermic reaction? (b) What is AHrxn for the reverse reaction? (c) What is AH when 3.2 mol of Sa reacts? (d) What is AH when 20.0 g of S8 reacts?

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7. Consider the following balanced thermochemical equationfor a reaction sometimes used
for H2S production:
%S8(s) + H2(g) → H2S(g)
(a) Is this an exothermic or endothermic reaction?
AHxn = -20.2 kJ
(b) What is AHrxn for the reverse reaction?
(c) What is AH when 3.2 mol of S8 reacts?
(d) What is AH when 20.0 g of S8 reacts?
Transcribed Image Text:7. Consider the following balanced thermochemical equationfor a reaction sometimes used for H2S production: %S8(s) + H2(g) → H2S(g) (a) Is this an exothermic or endothermic reaction? AHxn = -20.2 kJ (b) What is AHrxn for the reverse reaction? (c) What is AH when 3.2 mol of S8 reacts? (d) What is AH when 20.0 g of S8 reacts?
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