0.1 gram mixture of solid substances containg sodium hydroxide and sodium chloride was titrated with 0.1 molar hydrochloric acid the complete reaction takes place by consumption of 10 mlof the acid calculate the percentage of sodium hydroxide in the mixture

Question

Gilbert Hodge

Chemistry

10 May, 16:05

0.1 gram mixture of solid substances containg sodium hydroxide and sodium chloride was titrated with 0.1 molar hydrochloric acid the complete reaction takes place by consumption of 10 mlof the acid calculate the percentage of sodium hydroxide in the mixture

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Tipr · Answer 1

No of moles of HCl = 0.1 x 10/1000 = 0.001 mole

NaOH + HCl - -> NaCl + h2O

No of moles of HCl = no of moles of NaOH

Molar mass of NaOH = 23 + 16 + 1=40g

Mass of NaOH = no of moles x molar mass = 0.001 x 40=0.04g

Percentage = 0.04/0.1 x100=40%