Question

name a gas which has no effect on moist litmus paper

Answer 1

Any neutral gas or inert gas for eg helium, nitrogen, carbon dioxide etc.

Answer 2

Hydrogen gas no effect on moist litmus paper.

Explanation:

• The litmus paper is a universal indicator that is used to test the acidity/basicity of the aqueous solution.
• The litmus paper which is dipped in distilled water, it is called a moist litmus paper.
• The color change of the litmus paper is based on the effect of ions such as $H^+$and $OH^-$ ions released by the acid and base respectively.
• As inert gases such as hydrogen, oxygen, and nitrogen don't possess any such ions, they don't show any effect on moist litmus paper.

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