A Level CHEMISTRY 9701/11/O/N/20 Q15


15 A student mixes pairs of chemicals together in separate test-tubes.
● excess calcium (s) + water (l)
● barium chloride (aq) + strontium hydroxide (aq)
● calcium carbonate (s) + excess hydrochloric acid (aq)
● magnesium sulfate (aq) + barium nitrate (aq) How many of the mixtures produce a white, solid product?
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