9. (a) Describe the test to show that a gas is chlorine - Edexcel - GCSE Chemistry - Question 9 - 2019 - Paper 1
Question 9
9. (a) Describe the test to show that a gas is chlorine.
(b) Bromine reacts with hydrogen to form hydrogen bromide.
Hydrogen bromide dissolves in water to form a... show full transcript
Worked Solution & Example Answer:9. (a) Describe the test to show that a gas is chlorine - Edexcel - GCSE Chemistry - Question 9 - 2019 - Paper 1
Step 1
Describe the test to show that a gas is chlorine.
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Answer
To test for chlorine gas, damp litmus paper or indicator paper can be used. When chlorine gas comes into contact with the paper, it bleaches the paper, turning it white. This reaction occurs because chlorine is a powerful oxidizing agent.
Step 2
State the name of the solution formed.
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Answer
The name of the solution formed is hydrobromic acid.
Step 3
Predict the colour and state of astatine at room temperature.
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