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20 cm3 of 1.0 molar NH4OH solution whe...

20 cm3 of 1.0 molar NH4OH solution when neutralized with 20.05cm3 of 0.1 molar HCl liberated -102 joules of heat. Calculate the heat of neutralization of NH4OH?

A.

-51.O KJ mol-

B.

+57.3 KJ mol-

C.

+57.O KJ mol-

D.

+51.0 KJ mol-

View answer & explanation

Correct answer is A

NH4OH = 20cm of 0.1 m
NH4 + HCl → NH4Cl = H2O
Heat of Neutralization of NH4OH
= −1022 = -51.0 KJ mole-1

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