Question

11. Give the characteristic test for
a. Carbon dioxide
b. Hydrogen

Answer 1

Answer:

a) Test for CO2 gas (lime water test) When CO2 gas is passed through lime water, it turns milky due to the formation of insoluble calcium carbonate. If the gas is in excess, milkiness disappears due to the formation of soluble calciumbi carbonate.

Answer 2

Answer:

Test for CO2 gas (lime water test) When CO2 gas is passed through lime water, it turns milky due to the formation of insoluble calcium carbonate. If the gas is in excess, milkiness disappears due to the formation of soluble calciumbi carbonate.