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Q.

For the reaction 2H2O(l) →H3O+(aq) + OH-(aq), the value of ΔH is

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a

-114.6 KJ

b

114.6 KJ

c

57.3 KJ

d

-57.3 KJ

answer is C.

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Detailed Solution

H3O+(aq) + OH-(aq) → 2H2O(l)  ΔH= -57.3KJ it represents heat of neutratization

for   2H2O(l) →H3O+(aq) + OH-(aq)    ΔH= +57.3KJ 

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