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Question

How many grams of NaOH should be dissolved to make 100 cm3 of 0.15 M NaOH Solution?

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Solution

In 100 mL of 0.5 M NaOH solution, there are 100ml×0.5mol NaOH=50mmol of NaOH
Molar mass of NaOH = 40 g/mol NaOH

Mass of NaOH in 50mmol =50×103×40g=2g

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