NaOH + HCl ==> NaCl + H2O
mols HCl = M x L = ?
mols NaOH = mols HCl (from the 1:1 coefficients in the balanced equation)
grams NaOH = mols NaoH x molar mass NaOH
% NaOH = (g NaOH/g sample)*100 = >
3. A solution is made by dissolving 5.00 g of impure sodium hydroxide in water and making it up to 1.00dm3 of solution. 25.0 cm3 of this solution is neutralized by 30.0 cm3 of hydrochloric acid of concentration 0.102 mol/dm3.
a) Calculate the number of mole of HCl.
b) Calculate the number of sodium hydroxide.
c) Calculate the percentage purity of the sodium hydroxide
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