Question

A metal with a dilute hcl release a colourless odur gas which turn lime water milky . now will you constrate the ore and converted into metal oxide

Answer 1

The Gas formed on heating limestone is Carbon dioxide. When this gas is passed through lime water, it forms Calcium Carbonate or limestone which turns milky. When Limestone is heated, CaCO₃ --------Heat------- CaO + CO₂