10. A newspaper article claims that carbon dioxide is formed as follows. 1 during respiration 2 when calcium carbonate reacts with hydrochloric acid 3 when methane burns in air Which statements are correct? 1, 2 and 3 1 and 2 only 1 and 3 only 2 and 3 only A B C D 11. In separate experiments, mixtures of CuO/C and of MgO/C are strongly heated in the apparatus shown. What happens to the limewater in experiments? 12. The diagram a kiln used to heat limestone. What is the product and what waste gas is formed? 8) ACIDS, BASES AND SALTS 1. The incomplete equation a reaction. CuCO3 + H2SO4 products What are the products of this reaction? A copper(II) sulphur dioxide, hydrogen B copper(II) oxide, sulphur dioxide, water C copper(II) sulphate, carbon dioxide, hydrogen D copper(II) sulphate, carbon dioxide, water 2. Buildings made of calcium carbonate can react with rain’. ‘acid Which gas is formed as a result of this? carbon dioxide A B carbon monoxide C nitrogen dioxide D sulphur dioxide 3. Acidic waste gases from a factory are treated with substance X as shown.
10. A newspaper article claims that carbon dioxide is formed as follows. 1 during respiration 2 when calcium carbonate reacts with hydrochloric acid 3 when methane burns in air Which statements are correct? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only 11. In separate experiments, mixtures of CuO/C and of MgO/C are strongly heated in the apparatus shown. What happens to the limewater in experiments? 12. The diagram a kiln used to heat limestone. What is the product and what waste gas is formed? 8) ACIDS, BASES AND SALTS 1. The incomplete equation a reaction. CuCO3 + H2SO4 products What are the products of this reaction? A copper(II) sulphur dioxide, hydrogen B copper(II) oxide, sulphur dioxide, water C copper(II) sulphate, carbon dioxide, hydrogen D copper(II) sulphate, carbon dioxide, water 2. Buildings made of calcium carbonate can react with ‘acid rain’. Which gas is formed as a result of this? A carbon dioxide B carbon monoxide C nitrogen dioxide D sulphur dioxide 3. Acidic waste gases from a factory are treated with substance X as shown.