A soliution of sodium hydroxide contain 2 grams of sodium dissolved in 500cm3 of solution. Calculate the Molarity of this solution?
Define percentage of solution and write four ways how to calculate percentage of different solution?
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mass of sloute = 2gram
molar mass of NaOH = 40 u
no. of. moles of solute = 2 ÷ 40
= 0.05 mols
volume = 500 cm3 = 500 ml
molarity = number of moles of sloute ×1000
volume in ml
M= 0.05 ×1000
500
= 0.1 molar
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