Name the salt formed and the other products when zinc carbonate reacts with hydrochloric acid.
From Paper 1, Higher
62 marks
Give the half equation for the reaction at the anode in the electrolysis of dilute sulfuric acid.
From Paper 1, Higher
146 marks
Describe how to carry out a titration to find the volume of acid needed to neutralise 25.0 cm³ of an alkali.
From Paper 1, Higher
154 marks
Describe how copper is purified by electrolysis.
From Paper 1, Higher
221 mark
What is the pH of a neutral solution?
From Paper 1, Higher
233 marks
Explain why electrolysis is expensive and suggest one way the aluminium industry reduces costs.
From Paper 1, Higher
302 marks
Explain why universal indicator is not used in titrations.
From Paper 1, Higher
313 marks
Predict the products of electrolysis of molten lead(II) bromide and write the anode half equation.
Score 0 / 24 · 0 of 8 marked
This paper is written by Plasmo in the style of the Edexcel GCSE Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.
Chemical changes Exam Questions: Edexcel GCSE Chemistry | Plasmo