Essential Chemistry for IGCSE - Making And Identifying Salts (Section 1 - No. 12)
How can you safely test for a gas?
Put the tube directly into the open flame
Put the flame at the mouth of the tube and see if it reacts.
Do this where there is good ventilation.
Make sure to use the smallest amount of gas when testing.
Explanation
The correct response must contain all the important steps.
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