Q.

In determination of carbon and hydrogen by ultimate analysis, increase in weight of calcium chloride bulb represents              

A. weight of water formed
B. weight of carbon dioxide formed
C. carbon
D. hydrogen
Answer» A. weight of water formed
Explanation: the gaseous products of combustion are passed through two bulbs. one containing weighed amount of anhydrous calcium chloride which absorbs water other containing weighed amount of potassium hydroxide which absorbs carbon dioxide.
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