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10%( w/v ) acetic acid means 10g acetic acid in 100ml water.
Thus, 100g of Acetic acid would be present in 1000ml of water.
60g=1mole of acetic caid.
∴100g= 100/60 =1.67molesofCH3CO2H
Thus, 1.67moles present in 1L of water.
i.e. the solution is 1.67M
In case of CH3CO2H,1Nsolution=1Msolution
Thus, normality of 10% acetic acid=1.67