Thermodynamics Question 100

Question: The H2O(g) molecule dissociates as (i) H2O(g)H(g)+OH(g);ΔH=490kJ (ii) OH(g)H(g)+O(g);ΔH=424kJ The average bond energy (in kJ) for water is

Options:

A) 490

B) 424

C) 914

D) 914/2

Show Answer

Answer:

Correct Answer: D

Solution:

eq. (i) + eq. (ii) find the required result and divide by 2.



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