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Calculate the amount of oxalic acid (H(2...

Calculate the amount of oxalic acid `(H_(2)C_(2)O_(4).2H_(2)O)` required to obtain `250m` of deci-molar solution.

A

15.75g

B

1.575g

C

157.5g

D

None

Text Solution

Verified by Experts

The correct Answer is:
A
Molarity of solution`=0.5"M"`
Volume of solution`=250ml`
`therefore` mili mole oxalic acid`="M"xx"V"(ml)=1/2xx250 " or ""w"/"M"xx1000=0.5xx250`
`therefore" w"=(250xx126)/2xx1000=15.76"g"`
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