jackdwyer4829 jackdwyer4829

06-10-2017
Chemistry

contestada

Calculate the mass of naoh needed to prepare 100. ml of 0.15m solution.

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joequanlondon joequanlondon

09-10-2017

as, molarity = number of moles of solute / volume of solution(in liter)
here, volume is 500ml or 0.5 l
molarity is 0.04M
no. of moles of solute = mass of NaOH required (x) / gram atomic mass of NaOH(=40)

therefore, 0.04 = x / (40 x 0.5)
x = 0.8gram

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