Which reaction does not involve neutralisation?

5070_w15_qp_11

MCQ

2015

Paper 1, Variant 1

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Which graph shows the changes in pH as an excess of hydrochloric acid is added to aqueous sodium hydroxide?

5070_s05_qp_1

MCQ

2005

Paper 1, Variant 0

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Which equation represents the reaction between hydrochloric acid and sodium hydroxide?

5070_s08_qp_1

MCQ

2008

Paper 1, Variant 0

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The following statements about dilute sulfuric acid are all correct. Addition of Universal Indicator shows that the solution has a pH value of less than 7.0. A white precipitate is formed when aqueous barium nitrate is added. The solution reacts with copper(oxide, forming a blue solution. The solution turns anhydrous copper(sulfate from white to blue. Which two statements confirm the acidic nature of the solution?

5070_s12_qp_11

MCQ

2012

Paper 1, Variant 1

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The following statements about dilute sulfuric acid are all correct. Addition of Universal Indicator shows that the solution has a pH value of less than 7.0. A white precipitate is formed when aqueous barium nitrate is added. The solution reacts with copper(oxide, forming a blue solution. The solution turns anhydrous copper(sulfate from white to blue. Which two statements confirm the acidic nature of the solution?

5070_s12_qp_12

MCQ

2012

Paper 1, Variant 2

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Samples of three oxides, X, Y and Z, were added separately to dilute hydrochloric acid and to dilute sodium hydroxide. X and Y react with dilute hydrochloric acid but Z does not react. Y and Z react with aqueous sodium hydroxide but X does not react. Which type of oxide are each of X, Y and Z?

5070_s14_qp_12

MCQ

2014

Paper 1, Variant 2

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The pH of an aqueous solution of hydrochloric acid is 2. What will be the pH of the acid after the addition of 10 g of sodium chloride?

5070_s16_qp_11

MCQ

2016

Paper 1, Variant 1

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The pH of an aqueous solution of hydrochloric acid is 2. What will be the pH of the acid after the addition of 10 g of sodium chloride?

5070_s16_qp_12

MCQ

2016

Paper 1, Variant 2

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Lead(oxide, PbO, reacts with dilute nitric acid, neutralising the acid. Lead(oxide also reacts with aqueous sodium hydroxide, neutralising the alkali. Which word best describes lead(oxide?

5070_s18_qp_12

MCQ

2018

Paper 1, Variant 2

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Methanesulfonic acid has the structure shown. C H S O O H O H H Write the molecular formula for methanesulfonic acid. Methanesulfonic acid is a stronger acid than ethanoic acid. Explain the meaning of this statement. What is the difference between an aqueous acid and an aqueous alkali, in terms of the ions present? What is the mass of methanesulfonic acid needed to make 150 cm3 of a 0.150 mol / dm3 solution? mass g In a titration, 0.00150 moles of NaOH is exactly neutralised by 0.175 mol / dm3 methanesulfonic acid. One mole of sodium hydroxide reacts with one mole of methanesulfonic acid. Calculate the volume, in cm3, of aqueous methanesulfonic acid needed in this titration. volume cm3 Methanesulfonic acid reacts with magnesium to make a salt and a gas. Name the gas made in this reaction. The formula of the anion in the salt is CH3SO3 −. Write the formula of the salt formed.

5070_s18_qp_21

THEORY

2018

Paper 2, Variant 1

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