Determine the mass of alkali and the amount of substance that must be produced by reacting sodium oxide with 54 grams of water.

univerkov | January 17, 2021 | education

given:
m (H2O) = 54 g
to find:
m (NaOH)
n (NaOH)
decision:
H2O + Na2O = 2NaOH
n (H2O) = m: M = 54 g: 18 g / mol = 3 mol
n (H2O): n (NaOH) = 1: 2
n (NaOH) = 6 mol
m (NaOH) = n * M = 6 mol * 40 g / mol = 240 g
answer: 6 mol; 240 g

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