Question

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

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

Answer 1

Answer: (A)

$5^{o}C$

If equal amount of strong acid and an alkali are reacting, the rise in temperature will be the same. This is because the amount of energy released per gram will be the same.

$\therefore$ the rise in temperature will be $5^{0}C$.