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In an experiment to determine the enthal...

In an experiment to determine the enthalpy of neutralisation of sodium hydroxide with sulphuric acid, `50 cm^(3)` of `0.4M` sodium hydroxide were titreated thermometrically with `0.25M` sulphuric acid. Which of the following plots gives the correct representation ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
Meq.of `H_(2)SO_(4)` needed for 20 Meq.of NaOH=20. Thus volume of `H_(2)SO_(4)` needed `=V_(mL)` or `Vxx0.25xx2=20, :. V= 40mL`
Also temperature increases during neutralisation and becomes constant after neutralisation.
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