Question

10 g of NaOH has been dissolved per dm3 solution. The molarity of solution is?

Answer 1

put tthe values....u'll get the answer

Answer 2

Answer:

The molarity of the solution is $0.5 molL^{-1}$

Explanation:

Given: 10 g of NaOH has been dissolved per $dm^{2}$ solution

Step: 1

We know that molarity can be calculated as $\frac{n * 1000}{V_{ml} }$

Here according to the question

40 g/ ml is the molar mass of $NaOH$

Step: 2

The number of NaOH moles can be calculated as $\frac{10}{40} = 0.25 mol$

Now, by calculating the molarity using the formula we get:

$Molarity = \frac{0.25 * 1000}{500} = \frac{250}{500} =0.5 mol L^{-1}$

Hence, The molarity of the solution is $0.5 molL^{-1}$

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