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प्रश्न
How will you test ammonium ion?
लघु उत्तर
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उत्तर
To test for ammonium ion, sodium hydroxide solution is added to the salt and the mixture is warmed gently. Ammonia gas is evolved, which turns moist red litmus paper blue, confirming the presence of the ammonium ion.
\[\ce{NH+4 + OH− -> NH3 + H2O}\]
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