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Can you comment on the suitability of using the moist blue litmus paper to identify ammonia gas?

April 26, 2017BLUE Chemistry comment litmus Mathematics moist paper suitability

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Can you comment on the suitability of using the moist blue litmus paper to identify ammonia gas?

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You need to use moist red litmus paper to test for ammonia gas, not blue. Ammonia is the only common basic gas that is likely to be encountered in a school/college laboratory, and so testing a gas with red litmus paper to see if it is basic is (at GCSE level in England anyway) taken as a sufficient test for ammonia.