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If Weak acid or weak base are neutralis...

If Weak acid or weak base are neutralised ,the heat relealised , the heat released during neutralisatiojn is somewhat lesser than -13.7 kcal or -57.27Kj .Heat of neutralistion is also referred to as heat of formation of water from `H^(+)` and `OH^(-)` ionsi.e .,
`H^(+)OH^(-)to H_(2)O, Deltah=-13.7kcal`
Magnitude of heat of neutralistion of Hi and acetic acid respectively are (in kcal ) buy strong base are:

A

`13.7,lt13.7`

B

`gt13.7` for both

C

`lt 13.7` for both

D

`lt 13.7,gt13.7`

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The correct Answer is:
a
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Heat of neuralisation is amount of heat evolved or absorbed when 1g- equivalent of an acid reacts with 1g- equivalent of a base in dilute solution . If weak acid or weak bae are neutralised, the heat released during neutralisation is somewhat lesser than -13.7kcal or -57.27 kJ . Het of neutralisation is also referred as heat of formation of water from H^(+) and OH^(-) ions i.e., H^(+)+OH^(-) rarr H_(2)O, DeltaH=-13.7kcal. Heat of neutralisatio of HF and acetic acid respectively are ( in kcal):

Heat of neuralisation is amount of heat evolved or absorbed when 1g- equivalent of an acid reacts with 1g- equivalent of a base in dilute solution . If weak acid or weak bae are neutralised, the heat released during neutralisation is somewhat lesser than -13.7kcal or -57.27 kJ . Het of neutralisation is also referred as heat of formation of water from H^(+) and OH^(-) ions i.e., H^(+)+OH^(-) rarr H_(2)O, DeltaH=-13.7kcal. Which of the following statements are correct ? (1) DeltaH=DeltaU+DeltanRT (2) Heat changes measured by bomb calorimeter give change in heat enthalpy during the reaction. (3) DeltaH=DeltaU for the reaction : C_((s))+O_(2(g))rarr CO_(2(g)) (4) Heat of formation for C_(6)H_(6) can be directly measured.

Heat of neuralisation is amount of heat evolved or absorbed when 1g- equivalent of an acid reacts with 1g- equivalent of a base in dilute solution . If weak acid or weak bae are neutralised, the heat released during neutralisation is somewhat lesser than -13.7kcal or -57.27 kJ . Het of neutralisation is also referred as heat of formation of water from H^(+) and OH^(-) ions i.e., H^(+)+OH^(-) rarr H_(2)O, DeltaH=-13.7kcal. 200mL of 0.1M NaOH is mixed with 100mL of 0.1M H_(2)SO_(4) in 1 experiment. In II experiment 100mL of 0.1M NaOH is mixed with 50mL of 0.1M H_(2)SO_(4) . Select the correct statements: (1) heat liberated in each of the two reactions is 274cal . (2) heat liberated in I is 274 cal and in II is 137 cal . ,brgt (3) temperature rise is I reaction is equal to the temperature rise in II . (4) temperature rise in I reaction is equal to the temperaure rise in II

The heat of neutralisation for strong acid and strong base forming 2 moles of water is

Heat of neutralisation of a strong acid by a strong base is equal to DeltaH of

Statement : Heat of neutralisation can be given as : H^(+)+OH^(-) rarr H_(2)O, DeltaH=-13.6 kcal. Explanation : Heat of neutralisation can be alternatively defined as heat of formation of water.

Explain why heat of neutralisation of strong acid and weak base is less than 57.1 kJ .

The heat of neutralisation becomes large if either the acid or the base is weak.

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