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Week 33 Year 10 - acids, bases and salts questions

Last updated almost 2 years ago

7 questions

1

A small amount of solid magnesium oxide (MgO) reacts with excess dilute hydrochloric acid.
1. Write a balanced equation for this reaction (1 mark)

1

A small amount of solid magnesium oxide (MgO) reacts with excess dilute hydrochloric acid.
2. Describe what would be seen as the reaction occurs (1 mark)

1

HCl is a strong acid. What is meant by the term acid(1 mark)

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4. Now complete the following word equations for reactions between some acids and some bases.
1) iron + hydrochloric acid → 2) hydrochloric acid + copper carbonate → 3) iron(II) hydroxide + sulfuric acid → 4) nitric acid + calcium oxide →

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5. Nitric acid is a strong acid. Citric acid is a weak acid. What is the difference between strong and weak acids? (3)

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6. This question is about the reactions of calcium and some calcium compounds. (a) Calcium reacts with cold water. The equation for the reaction is
Ca(s) + 2H2O(l) => Ca(OH)2 (aq) + H2 (g)
(i)State two observations that are made when calcium reacts with water (2)

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(ii)Explain a possible value for the pH of the solution formed. (2)