1.

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 beA. `3.426 kJ`B. `13.7kJ`C. `5.2 kJ`D. `55 kJ`

Answer» 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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