Question

When $10$ mL of a strong acid is added to $10$ mL of a alkali, the temperature rises by $5^o$C. If $100$ mL of the same acid is mixed with $100$ mL of the same base, the temperature rise would be:

• A. $5^o$C
• B. ${50}^o$C
• C. ${20}^o$C
• D. Cannot be predicted

Answer 1

The correct option is A $5^o$C

For a strong acid and a strong base mixed together in equal volumes, the heat of reaction i.e. the heat of neutralisation reaction remains constant.

Increase in temperature also remains constant= $5^{o}C$