Limewater is a saturated solution of calcium hydroxide. When CO2 gas is bubbled into limewater it forms calcium carbonate, which is insoluble, and turns the limewater cloudy.
Oxygen or hydrogen are not very soluble in water, and they don't hydrolyze or form OH- ions that will shift the equilibrium. Therefore, O2 or H2 won't cause limewater to turn cloudy.
Oxygen or hydrogen are not very soluble in water, and they don't hydrolyze or form OH- ions that will shift the equilibrium. Therefore, O2 or H2 won't cause limewater to turn cloudy.
