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If H2(g) +I2(g) rarr 2HI(g), Delta H=12....

If `H_2(g) +I_2(g) rarr 2HI(g), Delta H=12.40 kcal`. The enthalpy of formation of HI is

A

`12.4` kcal

B

`-12 .4 " kcal "`

C

`-6.20 " kcal "`

D

6.20 kcal

Text Solution

Verified by Experts

The correct Answer is:
D
Heat of formation `=(12.40)/(2)= 6.20 kcal `
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NIKITA PUBLICATION-Chemical Thermodynamics & Energetics-QUESTION FROM COMPETITIVE EXAM
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