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What is the molarity (M) of a solution prepared by dissolving 33.2g of NaOH in water to make 750. Ml solution?

What is the molarity (M) of a solution prepared by dissolving 33.2g of NaOH in water-example-1
User Shivam Roy
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1 Answer

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The first step to solve this problem is to use the molecular weight of NaOH to convert the given mass to moles (MW=39.997 g/mol):


33.2g\cdot(mol)/(39.997g)=0.83mol

Now, divide this amount by the volume of the solution (in liters):


M=(0.83mol)/(0.75L)=1.11M

It means that the correct answer is D. 1.11M.

User Payo
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