Question

When 5.0 ml of 0.1 M $HCI$ solution is mixed with 5.0 ml of a 0.1 M $NaOH$ solution, the temperature of solution increases by $2^{o}C$. Which of the following can be predicted accurately from this observation?

• A. If 10 ml of same HCl is mixed with 10 ml of same NaOH, temperature rise will be $4^{o}C$
• B. If 10 ml of 0.05 M HCl is mixed with 10 ml, 0.05 M NaCl solution the temperature rise will be $2^{o}C$
• C. If 5 ml of 0.1 M HCl is mixed with 5 ml, 0.1 M $N{H}_3$ solution, the temperature rise will be less than $2^{o}C$
• D. If 5 ml, 0.1 M $C{H}_{3}COOH$ solution is mixed with 5 ml, 0.1 M NaOH solution, the temperature rise will be less than $2^{o}C$

Answer 1

Answer: (C), (D)

The correct options are
C If 5 ml, 0.1 M $C{H}_{3}COOH$ solution is mixed with 5 ml, 0.1 M NaOH solution, the temperature rise will be less than $2^{o}C$
D If 5 ml of 0.1 M HCl is mixed with 5 ml, 0.1 M $N{H}_3$ solution, the temperature rise will be less than $2^{o}C$

If 5 ml of 0.1 M HCl is mixed with 5 ml, 0.1 M $N{H}_3$ solution, the temperature rise will be less than $2^{o}C$

and

If 5 ml, 0.1 M $C{H}_{3}COOH$ solution is mixed with 5 ml, 0.1 M NaOH solution, the temperature rise will be less than $2^{o}C$

both C and D is right