Question
Asked Oct 14, 2019
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What is the molarity (M) of a(n) 10% NaOH solution (m.w. = 40.00 g/mol)?

How many grams of NaOH would you need to make 2,200 mL of a 3 M NaOH solution (m.w. = 40.00 g/mol)?

Can you explain in details, like what is the equation?

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Expert Answer

Step 1

The values are given as follows:

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amount of NaOH solution 10% molar mass of NaOH = 40.00 g/mol volume of NaOH solution 2200 mL 1L 2200 mL 1000 mL 2.2 L

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Step 2

Since, the solution of NaOH is 10 % which means 100 mL of solution has 10 g NaOH. Therefore, the number of moles of NaOH can be calculated as follows:

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Here mass of NaOH= 10 g molar mass of NaOH = 40 g/mol Now mass of NaOH moles of NaOH. molar mass of NaOH 10 g 40 g/mol 0.25 mol

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Step 3

The molarity of the NaOH solution c...

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General Chemistry

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