Answer to Question #139905 in General Chemistry for brianna

Question

Be sure to answer all parts.

Consider the following balanced thermochemical equation for a reaction sometimes used for H2S production:

1
8
S8(s) + H2(g) → H2S(g) ΔHrxn = −20.2 kJ

(a) Is this an exothermic or endothermic reaction?
endothermic
exothermic

(b) What is ΔHrxn for the reverse reaction?

kJ

(c) What is ΔH when 3.40 mol of S8 reacts?

kJ

Answer 1

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