Question

What happens when a solution of an acid is mixed with a solution of a base in a test tube?

1. The temperature of the solution increases
2.  The temperature of the solution decreases
3.  The temperature of the solution remains the same
4. Salt formation takes place

Options

• (i) only

• (i) and (iii)

• (ii) and (iii)

• (i) and (iv)

Answer 1

(i) and (iv)

Explanation - 

Salt formation takes place in the neutralisation reaction. It is always exothermic and temperature increases.