solutions

250ml of a sol. contains 2.65 grams of Na2CO3. 10ml of this sol. is added to "x" ml of water to obtain 0.001M Na2CO3 SOL. What is the value of"x" in ml ??

4 Answers

11
Shailesh ·

The solution itself is 0.001 M
so water added should be 0 ml

1
pinky ·

sry...tht's not given in the options.

11
Shailesh ·

actually mole in 10 ml is 0.001

so for 0.001 M solution final volume should be 1 litre

water added = 1000-10=990 ml

1
pinky ·

yeah..i got it, thnx 4 the help.

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