chemistry

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When dilute nitric acid was added to a solution of one of the following chemicals, a gas was evolved. This gas turned a drop of limewater. Ca(OH)2, cloudy,due to the formation of a white precipitate. The chemical was...

A. NH3
B. NaHCO3
C. NaCl
D. MgSO4x7H20
E. 5% NaOCl

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asked by El
  1. The classic test for carbon dioxide (CO2) is the lime water test.
    Ca(OH)2 + CO2 ==> CaCO3(white solid) + H2O
    Which of the five do you think will evolve CO2 gas?

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    posted by DrBob222

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