How many milliliters of a 25% (m/v) NaOH solution would contain 75 g of NaOH?

Answer:
25%(w/v) NaOH => 25g of NaOH in 100mL solution

thus for 75g of NaOH, the volume required = 100mL x 3 = 300mL for the same concentration

% by mass/ V = mass solute / V solution ( in mL) x 100
25 % = 75 / V x 100
V = 75 / 25 x 100 = 300 mL

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