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The mass of anhydrous Na2CO3 present in1...

The mass of anhydrous `Na_2CO_3` present in150ml of 0.25M solution is

A

3.975g

B

6.675g

C

9.785g

D

4.758g

Text Solution

Verified by Experts

The correct Answer is:
C
An unknown gaseous ………….
`{:(,C_(x)H_(y)+,(x+(y)/(4))O_(2)rarr,xCO_(2)+(y)/(2)H_(2)O(l)),(i,a,7a,0),(f,0,7a-(x+(y)/(4))a,xa):}`
Given : `7a - (x+(y)/(4))a = xa`
`:. 8x +y = 28`
Only `C_(3)H_(4)` hydrocarbon satisfies the above relation.
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