Try it on paper first. A hint, the key idea and the worked solution are here when you need them.
Write the balanced equation for each.
Acid + metal salt + hydrogen. Acid + carbonate or hydrogencarbonate salt + water + carbon dioxide. Acid + base salt + water. Hydrogen burns with a pop; carbon dioxide turns lime water milky. Metal oxides are basic, non-metal oxides acidic.
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) .
Step 2. (b) .
Step 3. (c) .
Answer: as above.
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