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Author Question: The following reaction takes place at 120C: H2O(l) H2O(g) H = 44.0 kJ/mol S = 0.119 kJ/mol ... (Read 252 times)

anshika

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Question 1

The following reaction has a Δ value of 25.63 kJ/mol at 25°C.
    HB(aq) + H2O(l) H3O+(aq) + B(aq)
Calculate the Ka for the acid HB.

0.990
–10.3
3.22 × 10–5
2.56 × 10–5
–123

Question 2

The following reaction takes place at 120°C: H2O(l) → H2O(g)     ΔH = 44.0 kJ/mol     ΔS = 0.119 kJ/mol K

Which of the following must be true?


The reaction is not spontaneous.
The reaction is spontaneous.
ΔG = 0
ΔG< 0
Two of these are true.


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Marked as best answer by anshika on Mar 21, 2021

lkoler

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