How much hydrogen chloride needs to be dissolved in a solution containing 12 g of sodium hydroxide?

univerkov | September 5, 2021 | education

1. Find the amount of sodium hydroxide substance by the formula n = m: M; n = 12 g: 40 g = 0.3 mol.

2. We make the equation of the reaction between sodium hydroxide and hydrogen chloride.

3. We find the quantitative ratios of the reactants: NaOH and HCl.

Based on the equation, it can be seen that they react as 1: 1, that is, 1 mole of NaOH reacts with a mole of HCl. The amount of HCl substance will be equal to 0.3 mol.

3. Let’s calculate the volume of hydrogen chloride by the formula.

It should be remembered that the molar volume is a constant value, equal to 22.4 l / mol.

V (HCl) = 0.3 mol x 22.4 L / mol = 6.72 L.

Answer: V (HCl) = 6.72 liters.

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