A student carried out an experiment to see how reactive different metals are when they are placed in dilute hydrochloric acid - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2016 - Paper 1
Question 5
A student carried out an experiment to see how reactive different metals are when they are placed in dilute hydrochloric acid.
A sample of each metal was placed in ... show full transcript
Worked Solution & Example Answer:A student carried out an experiment to see how reactive different metals are when they are placed in dilute hydrochloric acid - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2016 - Paper 1
Step 1
Which gas is given off?
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Answer
When zinc reacts with dilute hydrochloric acid, the gas that is released is hydrogen. This is a common reaction where metals displace hydrogen from acids. Therefore, the correct answer is:
C hydrogen
Step 2
What is the formula of zinc chloride?
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Answer
Zinc chloride is formed when zinc reacts with hydrochloric acid. The chemical formula for zinc chloride is ZnCl₂, indicating that one zinc ion (Zn²⁺) combines with two chloride ions (Cl⁻) to balance the charge. Therefore, the correct answer is:
