Question

Equal volumes of 1M Hcl and $H_{2}S{O}_4$ are neutralised by 1M NaoH solution and x and y KJ/equivalent of heat are liberated, respectively. Which of the following relations is correct?

• A. x=2y
• B. x=3y
• C. x=4y
• D. x= 1/2 y

Answer 1

The correct option is D

x= 1/2 y

Since $H_{2}S{O}_4$ gives 2moles of $H^{\oplus }$ , Hcl gives 1 mole of $H^{\oplus }$ from 1 mole after ionisation. Hence, $H_{2}S{O}_4$ will release double amount of heat as compared to Hcl

i.e.) y=2x $\Rightarrow$ x = 1/2