Question

How many grams of naoh will be needed to prepare 250 ml. Of 0.1 m solution ?

Answer 1

Answer:

100 ml of 0.5 M NaOH contains =40x 100/1000 x 0.5= 2- grams. So to prepare 100 ml of 0.5M NaOH, dissolve 2- grams of NaOH in a 100 ml standard flask in distilled water.

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Answer 2

Answer:

Explanation:

We know molarity is the ratio of number of moles to the volume of solution in litres.

Here, molarity is 0.1

Volume=250ml

Moles of NaOH=0.1*250/1000=1/40

Moles=Mass/Molar mass

=>Mass=1/40*40=1g