Question

Which of the following mixing of 1M base and 1M acid leads to the largest increase in temperature?

• A. 30 mL \( \text{CH}_3\text{COOH} \) and 30 mL NaOH
• B. 45 mL \( \text{CH}_3\text{COOH} \) and 25 mL NaOH
• C. 50 mL HCl and 20 mL NaOH
• D. 30 mL HCl and 30 mL NaOH

Hint:

Strong acid and strong base neutralization reactions generate the maximum heat compared to weak acid and base neutralizations.

Answer 1

The Correct Option is C

- Heat from acid-base neutralization is proportional to the product of acid and base molarities and volumes.- The combination yielding the maximum heat release will have the highest product of molarities and volumes.- Comparing the options, the mixture of 50 mL HCl and 20 mL NaOH will produce the greatest heat increase, as it involves a strong acid and strong base, maximizing heat generation. Final Answer: Option (3).