Quiz on acids and alkalis

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1. What is the pH of a strong acid ?

pH 1 Answer

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2. What is the correct name for the reaction between an acid and an alkali?

neutralisation Answer

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3. How can you tell from its name that sodium hydroxide is an alkali ?

It includes the word "hydroxide"

Answer

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4 Name three common strong acids

Hydrochloric acidSulfuric acidNitric acid

Answer

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5. Lemon juice contains citric acid. Suggest a pH value for citric acid

pH4 ( it is a weak acid) Answer

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6. What gas is released when an acid reacts with a metal ?

hydrogen Answer

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7. How can you test for the gas released when an acid reacts with a metal ?

The hydrogen will "pop" with a

flame

Answer

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8. When hydrochloric acid reacts with sodium hydroxide, what are the products ?

Sodium chloride and

waterAnswer

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9. When sulfuric acid reacts with potassium hydroxide,what are the products ?

Potassium sulfate and

waterAnswer

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10. What gas is released when hydrochloric acid reacts with calcium carbonate ?

Carbon dioxideAnswer

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11. What reactants ( starting chemicals) would produce sodium nitrate ?

Sodium hydroxideand

nitric acidAnswer

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12. Soap is a very weak alkali. Suggest a pH value for soap

pH8(pH7 is neutral so a very

weak alkali would have a pH just greater than this)

Answer

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