Which gas is produced in the reactions of Group 1 metals with water?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Which gas is produced in the reactions of Group 1 metals with water?

Explanation:
Group 1 metals react with water to form a metal hydroxide and hydrogen gas. The reaction shows the hydrogen atoms from water being released as H2, while the metal ends up as MOH. For example, 2 Na + 2 H2O → 2 NaOH + H2. Oxygen would not be produced in this reaction (it would require water to be split in a different process), and nitrogen or carbon dioxide aren’t formed from this combination of reactants. The key idea is that the gas released in these reactions is hydrogen.

Group 1 metals react with water to form a metal hydroxide and hydrogen gas. The reaction shows the hydrogen atoms from water being released as H2, while the metal ends up as MOH. For example, 2 Na + 2 H2O → 2 NaOH + H2. Oxygen would not be produced in this reaction (it would require water to be split in a different process), and nitrogen or carbon dioxide aren’t formed from this combination of reactants. The key idea is that the gas released in these reactions is hydrogen.

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