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If 27 g of water is formed during comple...

If 27 g of water is formed during complete combustion of pure propene `(C_(3)H_(6))`, the mass of propene burnt is :

A

42g

B

21g

C

14g

D

56g

Text Solution

Verified by Experts

The correct Answer is:
B
`underset(42g)(CH_(3)CH)= CH_(2) + 9//2O_(2) rarr 3CO_(2) + underset(3 xx 18 =54g)(3H_(2)O)`
54 g of `H_(2)O -= 42g` of propene
`therefore 27g` of `H_(2)O = (42)/(54) xx 27= 21g`
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