Question

A solution is prepared by dissolving 10.2g of glucose, C6H12O6, in 405g of water. The final volume of the solution is 414mL. Find the concentration of the solution in units of molality.

Possible Answers:

0.149m

0.122m

0.135m

0.140m
With full solution


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Answer 1

♡ Heya user ♡

Solution :-

As we know,

Molarity = moles of solute / kg of solvent

At first, find the moles of glucose. Hence, the molar mass of glucose is 180. 6

10.2 g of glucose. (1 mole glucose/ 180.6 g of glucose)

= 0.0566 moles

After that, convert the grams of water into kilograms.

405/1000 = 0.405 kg

Hence,

Molarity = 0.0566/0.405

= 0.140m

✧Thanks ✧

Answer 2

Answer:

Above is your answer

Thanks..