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At a particlular temperature H^(o+) (a...

At a particlular temperature
`H^(o+) (aq) +OH^(Theta)(aq) rarr H_(2)O(l),DeltaH =- 57.1 kJ`
The approximate heat evolved when `400mL` of `0.2M H_(2)SO_(4)` is mixed with `600mL` of `0.1M KOH` solution will be

A

`3.426 kJ`

B

`13.7kJ`

C

`5.2 kJ`

D

`55 kJ`

Text Solution

Verified by Experts

The correct Answer is:
A
Number of equivalent of `H_(2)SO_(4)` taken
`= (0.2 xx2xx 400)/(1000) = 0.16`
Number of equivalent of `KOH` added `=(600xx0.1)/(1000) = 0.06`
Number of equivalents of acids and bases which neutralized each other `= 0.06`
`:.` Heat evolved `= 0.06 xx 57.1 kJ = 3.426 kJ`
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