Question

a)how does concentration of hydronium ions (H3O+) change when a solution of an acid is diluted?
b) what do you observe on adding dilute HCL to
1) sodium carbonate placed in a test tube.
2) zinc metal in a test tube

Answer 1

a. the concentration of hydronium ion decreases per unit volume when solution of an acid is diluted.
b. 1. Carbon dioxide,water and salt is given out
2. salt and hydrogen is released