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Darina [25.2K]
3 years ago
14

The molarity (m) of an aqueous solution containing 22.5 g of glucose (c6h12o6) in 35.5 ml of solution is ________.

Chemistry
2 answers:
Veseljchak [2.6K]3 years ago
5 0
Molarity is found by dividing moles of solute/liters of solution. First, find the molar mass of glucose:

22.5 grams C6H12O6 x(1 mole/180 grams) = 0.125 moles glucose

Then, divide moles over liters:
M=0.125 moles glucose/0.035 L sol'n
M=3.57 

nevsk [136]3 years ago
4 0

Explanation:

Molarity is the number of moles present in a liter of solution.

Mathematically,     Molarity = \frac{\text{no. of moles}}{\text{volume in liter}}

And, no. of moles = \frac{mass}{\text{molar mass}}

Molar mass of C_{6}H_{12}O_{6} is 180.15 g/mol. Therefore, number of moles present will be as follows.

   No. of moles = \frac{mass}{\text{molar mass}}

                         = \frac{22.5 g}{180.15 g/mol}

                          = 0.124 mol

Hence, calculate the molarity as follows.

                Molarity = \frac{\text{no. of moles}}{\text{volume in liter}}

                       = \frac{0.124 mol}{0.0355 L}      (as 1 L = 1000 mL)

                       = 3.51 M

Thus, we can conclude that molarity of the solution is 3.51 M.

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