Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Inorganic Chemistry
869 practice questions
Topics covered
- The Alkali Metals85 practice questions
- The Halogens86 practice questions
- Gases in the Atmosphere86 practice questions
- Reactivity Series163 practice questions
- Extraction and Uses of Metals128 practice questions
- Acids, Alkalis and Titrations83 practice questions
- Acids, Bases and Salt Preparations156 practice questions
- Chemical Tests68 practice questions
Practice questions
271–280 of 374 · Normal
Question 271
2 marks · Normal
Answer and see the solution →State the products when zinc reacts with dilute sulfuric acid. Write a balanced chemical equation for this reaction.
Question 272
4 marks · Normal
Answer and see the solution →Answer the following about acids and bases.
(a)[1 mark]State the definition of an acid in terms of proton transfer.
(b)[1 mark]State the definition of a base in terms of proton transfer.
(c)[2 marks]Ammonia reacts with hydrochloric acid to form ammonium chloride. Write an equation for the reaction and identify which species acts as the proton donor.
Question 273
3 marks · Normal
Answer and see the solution →Explain, in terms of proton transfer, what happens when sodium hydroxide reacts with nitric acid. Include the role of each substance as an acid or base.
Question 274
4 marks · Normal
Answer and see the solution →The table shows observations during reactions between different metals and dilute acids:
Observations when metals react with acids Metal Acid Observation Magnesium Hydrochloric acid Rapid fizzing, heat produced, magnesium disappears Iron Sulfuric acid Slow fizzing, little heat, iron remains after reaction Zinc Hydrochloric acid Moderate fizzing, slow disappearance of metal (a)[2 marks]Which metal is the least reactive based on the observations? Give a reason for your answer.
(b)[2 marks]Write a balanced chemical equation for the reaction between magnesium and hydrochloric acid.
Question 275
1 mark · Normal
Answer and check →Which statement about acids and bases is correct?
- A.An acid is a substance that accepts a proton.
- B.A base is a substance that donates a proton.
- C.An acid is a proton donor and a base is a proton acceptor.
- D.A base is a proton donor and an acid is a proton acceptor.
Question 276
2 marks · Normal
Answer and see the solution →Name the gas formed when a metal such as magnesium reacts with dilute hydrochloric acid. State the test for this gas.
Question 277
4 marks · Normal
Answer and see the solution →The following questions concern acids and bases.
(a)[1 mark]Define the term 'base' in terms of proton transfer.
(b)[1 mark]Complete the following equation for a reaction between an acid and a base:
(c)[2 marks]Explain, in terms of proton transfer, what happens in this reaction.
Question 278
3 marks · Normal
Answer and see the solution →Magnesium reacts with dilute sulfuric acid to produce magnesium sulfate and hydrogen gas according to the equation:
Calculate the maximum mass of magnesium sulfate (MgSO₄) that can be formed by completely reacting 2.40 g of magnesium with excess dilute sulfuric acid.
Give your answer to 2 decimal places. (Relative atomic masses: Mg = 24.0, S = 32.1, O = 16.0)
Question 279
2 marks · Normal
Answer and see the solution →State the general word equation for the reaction between an acid and a metal oxide.
Question 280
4 marks · Normal
Answer and see the solution →Magnesium oxide reacts with hydrochloric acid in a beaker. Answer the following questions about this reaction.
(a)[1 mark]State the names of the products formed in this reaction.
(b)[2 marks]Write the balanced chemical equation for the reaction.
(c)[1 mark]Describe the visible change that could be seen during this reaction.