Question
Asked Sep 28, 2019
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What is the molarity of a 30% solution of NaCl?

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Expert Answer

Step 1

Given:

For NaCl, a 30% solution would be 30 g of NaCl in 100 mL of Solution, so multiplying by 10 would give 300 g in 1 L of solution.

Molar mass of NaCl = 58.44 g/mol.

Step 2

Calculation for number of moles of NaCl:

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mass number of moles molar mass 300 g number of moles 58.44 g/mol number of moles 5.134 moles

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Step 3

Calculation for molari...

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number of moles Molarity Volume (L) 5.134 moles Molarity 1 L Molarity 5.134 mol/L 5.134 M.

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