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When a metal X is treated with cold water, it gives a basic salt Y with molecular formula XOH (Molecular mass = 40) and liberates a gas Z

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asked Jan 30, 2018 in Chemistry by Kundan kumar (49,132 points) ● 34 ● 435 ● 1335

When a metal X is treated with cold water, it gives a basic salt Y with molecular formula XOH (Molecular mass = 40) and liberates a gas Z which easily catches fire. Identify X, Y and Z and also write the reaction involved

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answered Jan 30, 2018 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 24
 
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Sodium (Na) and potassium (K) react with cold water to form basic salt NaOH and KOH respectively. The molecular mass of NaOH is 40. So, X is Na and Y is NaOH. The gas liberated during the reaction is hydrogen (H2). So Z is H2.

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