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Vitamin c is essential for prevention of scurvy . Combustion of 0.2000gram of vitamin c gives 0.2998 gram of co2 and 0.819 of H2O . What's empirical formula of vitamin c

Posted by Satakshi Mishra 3 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Sia ? 3 years, 4 months ago

let vitamin C empirical formula is CxHy
CxHy + (x +y/4) O2 ------> xCO2 + y/2 H2O
now,
you see 1 mole of vitamin C form x mole CO2 and y/2 mole of H2O
so,
(0.2000)/(12x+y)= x (0.2998)/(44)
again,
(0.2000)/(12x + y)= y/2 (0.819)/(18)
divide both,
1 = x (0.2998). (18)/y/2 (0.819)(44)
y (0.819)(22) = x (0.2998)(18)
x/y = (0.2998)(18)/(0.819)(22)
= 3/10
hence, empirical formula of vitamin C is C₃H₁₀

1Thank You

Gurkirt Singh 3 years, 4 months ago

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