# How much hydrogen will be released when an electric current is passed through 180 g of water?

August 27, 2021 | education

| m (H2O) = 180 g. Let us determine the volume of released hydrogen. We write down the solution. First, we write down the equation of reactions. 2H2O -> 2H2 + O2. We find the amount of water substance. We use the following formula. n = m / M. Where n is the amount of substance. m is the mass of the substance. M is the molar mass of the substance. M (H2O) = 1 * 2 + 16 = 18 g / mol. n (H2O) = 180/18 = 10 mol. Using the reaction equation, we find the amount of hydrogen substance. 10 mol H2O – х mol H2 2 mol H2O – 2 mol H2 X = 10 * 2: 2 = 10 mol H2. Find the volume of hydrogen. n = V / Vm. V = n * Vm = 10 * 22.4 = 224 liters.

Answer: the volume of hydrogen is 224 liters.

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