Test for Chlorine (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What type of substance is chlorine?
What type of substance is chlorine?
A toxic gas
During which chemical process can chlorine gas be produced?
During which chemical process can chlorine gas be produced?
Electrolysis
What is chlorine commonly used for?
What is chlorine commonly used for?
Disinfectants and bleaching agents
Which colour litmus paper should be used to test for chlorine gas?
Which colour litmus paper should be used to test for chlorine gas?
Blue litmus paper
What must be done to the litmus paper before testing for chlorine?
What must be done to the litmus paper before testing for chlorine?
Dampen it with water
Why should the litmus paper be damp rather than dry?
Why should the litmus paper be damp rather than dry?
Chlorine reacts more effectively with it
What happens to blue litmus paper when chlorine gas is present?
What happens to blue litmus paper when chlorine gas is present?
It is bleached
What colour change occurs when chlorine bleaches the litmus paper?
What colour change occurs when chlorine bleaches the litmus paper?
Blue to white
What acid forms when chlorine reacts with water on the litmus paper?
What acid forms when chlorine reacts with water on the litmus paper?
Hydrochloric acid
Why does the bleaching effect occur on the litmus paper?
Why does the bleaching effect occur on the litmus paper?
Acid destroys the dye in the paper