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Dilute hydrochloric acid can be used to make salts - Edexcel - GCSE Chemistry - Question 3 - 2012 - Paper 1
Question 3
Dilute hydrochloric acid can be used to make salts. The salts produced are chlorides. Some copper compounds react with dilute hydrochloric acid to produce copper c... show full transcript
Worked Solution & Example Answer:Dilute hydrochloric acid can be used to make salts - Edexcel - GCSE Chemistry - Question 3 - 2012 - Paper 1
Step 1
Which of the following compounds will not neutralise dilute hydrochloric acid to produce copper chloride?
Answer
The compound that will not neutralise dilute hydrochloric acid to produce copper chloride is A copper carbonate. This is because copper carbonate reacts with acids to produce carbon dioxide, whereas the other compounds will react to form copper chloride.
Step 2
Step 3
Explain which tablet, A or B, is the best value for money.
Answer
To determine the best value for money, we can calculate the cost per cm³ of hydrochloric acid neutralised for each tablet:
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For Tablet A: Cost: £2.5 for 30.6 cm³ Cost per cm³ = £2.5 / 30.6 = £0.0817 per cm³
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For Tablet B: Cost: £1.2 for 10.2 cm³ Cost per cm³ = £1.2 / 10.2 = £0.1176 per cm³
Thus, Tablet A is the best value for money as it neutralises hydrochloric acid at a lower cost per cm³.
Step 4
Step 6
Explain why it could be dangerous to produce large amounts of chlorine in a factory.
Answer
Producing large amounts of chlorine can be dangerous because chlorine is toxic and can leak out, posing health risks. It is also flammable and corrosive, which could lead to harmful exposures and environmental hazards. Additionally, injuries could occur if chlorine comes into contact with skin or eyes.