1.

When 400 ml of 2.0 N solution of a weak acid is neutralized by a dilute aqueous solution of sodium hydroxide under standard conditions, 4.4 kJ amount of heat is liberated. Therefore, the standard enthalpy of neutralization of this weak acid in kJ eq^(-1) is

Answer»

`-11`
`-44`
`-55`
`-22`

Solution :No. of EQUIVALENTS of weak acid `0.4xx0.2`=0.08
So, amount of heat liberated PER EQUIVALENT
`-(4.4)/(0.08)=-55 kJ`.


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