Question

Test the gas evolved first with dry and then with wet litmus paper. In which of the two cases, does the litmus paper show change in colour?

Answer 1

Explanation:

When the gas evolved is tested with dry blue litmus paper then there is no change in the colour of the dry blue litmus paper. This shows that HCl gas does not behave as an acid in the absence of water. When the gas is tested with wet blue litmus paper then the blue litmus paper turns red.

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Answer 2

Answer:

when

Explanation:

when the gas is evolved then test with litmus paper if it changes to blue then it is base if it changes to red then it is acid........

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