Em B.

asked • 09/05/17

multiple choice HCL + carbonate/nitrate question

31 A mixture of solids is treated with an excess of dilute hydrochloric acid. A colourless gas is evolved and a white precipitate forms. What are the solids in the mixture?
A calcium carbonate and magnesium hydroxide
B calcium carbonate and magnesium nitrate
C lead nitrate and calcium hydroxide
D lead nitrate and magnesium carbonate
thank you

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