Calculate the amount of sodium hydroxide substance, which is formed by mixing an excess of sulfuric acid solution and 100 g

univerkov | December 30, 2020 | education

Calculate the amount of sodium hydroxide substance, which is formed by mixing an excess of sulfuric acid solution and 100 g of a solution with a mass fraction of sodium hydroxide of 8%.

NaOH + H2SO4 = NaHSO4 + H2O
mass of NaOH = 100 * 0.08 = 8 g
amount of substance NaOH = 8/40 = 0.2 mol (40 molar mass of NaOH)
NaOH: NaHSO4 = 1: 1 since there are no ratios
amount of substance NaHSO4 = 0.2 mol

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