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Tests of carbondioxide |
| Carbon dioxide gas has no color or smell .The gas will turn moist litmus paper from blue to red and moist universal indicator paper to yellow .Carbon dioxide gas dissolved in water forms carbonic acid (H2CO3 ). Specific tests for carbon dioxide Carbondioxide will turn limewater milky or cloudy .When carbon dioxide is bubbled through it ,a solid precipitate of calciumcarbonate is formed .Calcium carbonate is chalk or limestone and so that it makes lime water cloudy . Ca OH +CO2 ________> CaCO3 +H2O |
