State the colour of (i) pure nitric acid (ii) nitric acid obtained i

1.	State the colour of (i) pure nitric acid (ii) nitric acid obtained in the laboratory (iii) nitric acid obtained in the laboratory after passage of air or addition of water to it.
Answer» i. Pure nitric acid is colourless. ii. Nitric acid obtained in laboratory is pale yellow in colour. iii. The pale yellow colour of nitric acid disappears and hence it becomes colourless.

State the colour of (i) pure nitric acid (ii) nitric acid obtained in the laboratory (iii) nitric acid obtained in the laboratory after passage of air or addition of water to it.

Answer»

i. Pure nitric acid is colourless.

ii. Nitric acid obtained in laboratory is pale yellow in colour.

iii. The pale yellow colour of nitric acid disappears and hence it becomes colourless.