Question

An organic compound is burnt with excess of `O_(2)` to produce `CO_(2)(g)` and `H_(2)O(l)`. Which results in `25%` volume contraction. Which of the following option`(s)` satisfy the given conditins.
A. `10 ml C_(3)H_(8) + 110ml O_(2)`
B. `20ml C_(2)H_(6)O + 80mlO_(2)`
C. `10ml C_(3)H_(6)O_(2) + 50mlO_(2)`
D. `40 ml C_(2)H_(2)O_(4) + 60ml O_(2)`

Answer 1

Correct Answer - A::C
Check option
(a) `{:(C_(3)H_(8)+5O_(2)(g)rarr3CO_(2)(g)+4H_(2)O(l)),(10" "50" "30):}`
`%` vol. contraction `=(V_(R)-V_(P))/(V_(i)xx100`
`=(60-30)/(120)xx100 = 25%`
(b)`L.R`.
`{:(C_(3)H_(6)O_(2)+(3)/(2)O_(2)rarr3CO_(2)(g)+3H_(2)O(l)),(10mL" "50mL" "30mL):}`
`%` vol. contraction `= (15)/(60)xx100 = 25%`