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During the electrolysis of water, if the volume of oxygen produced is 8 mL, what volume of hydrogen will be produced at the same temperature and pressure?

Answer and explanation

Correct answer: 16 mL

The reaction is \(2H_2O \rightarrow 2H_2 + O_2\). At the same temperature and pressure, the gas volumes are in the ratio of their coefficients, so \(H_2:O_2 = 2:1\). Therefore, for 8 mL of oxygen, the volume of hydrogen is \(2 \times 8 = 16\) mL. The 8 mL option is incorrect because the volumes of the two gases are not equal.

Related tags

ScienceClass-10Chemical-ReactionsElectrolysis-Of-WaterGas-Volume-Ratio

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