Which of the following mixing of 1 M base and 1 M acid leads to the largest increase in temperature?
Select the correct option:
A
50 mL HCl and 20 mL NaOH
B
$30 \mathrm{mLCHH}_{3} \mathrm{COOH}$ and 30 mL NaOH
C
30 mL HCl and 30 mL NaOH
D
$45 \mathrm{mLCH}_{3} \mathrm{COOH}$ and 25 mL NaOH
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Higher the number of milli moles of acid or base reacted higher will be temperature rise.
Option (4) $n_{\text {acid }}$ or $n_{\text {base }}$ reacted $=30 \mathrm{mmol}$
Option (2) $n_{\text {acid }}$ or $n_{\text {base }}$ reacted $=30 \mathrm{mmol}$ but less energy will be released by neutralisation reaction of weak acid hence option (2) can not be correct.
Option (3) ⇒ 20mmol
Option (4) ⇒ 25mmol
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