Question

To prepare 2M (Molar) C₆H₈O₇ solution in 250 ml of diethyl ether. What is amount of grams C₆H₈O₇ need?

Answer 1

Answer:

Solution

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Correct option is A)

Molarity (M) : The number of moles of a solute dissolved in 1 L (1000 ml) of the solution is known as the molarity of the solution.

Molarity of a solution

(M)=

molar mass of solute

mass of solute

×

volume of solution in mL

1000

∴0.2=

40

w

×

500

1000

so w=4gm.

Amount of sodium hydroxide present in 500ml of 0.2M solutions is 4 gm.

Answer 2

this is your answer

I think it is correct