Mole ConceptMedium
Question
A volume of 200 ml of oxygen is added to 100 ml of a mixture containing CS2 vapour and CO, and the total mixture is burnt. After combustion, the volume of the entire mixture is 245 ml. Calculate the volume of the oxygen that remains
Options
A.67.5 ml
B.125.0 ml
C.200.0 ml
D.100.0 ml
Solution
$CS_{2} + 3O_{2} \rightarrow CO_{2} + 2SO_{2}$
V mL 3V mL V mL 2V mL
2CO + O2 → 2CO2
$$(100 - V)\text{mL} \frac{1}{2}(100 - V)\text{mL} (100 - V)\text{mL}$$
Total contraction in volume, $V + \frac{1}{2}(100 - V) = (100 + 200) - 245 \Rightarrow V = 10$.
Hence, the volume of O2 remained $= 200 - \left\lbrack 3V + \frac{1}{2}(100 - V) \right\rbrack = 125\text{ mL}$
Create a free account to view solution
View Solution FreeMore Mole Concept Questions
An organic compound contains C, H, and O. If C(%) : H(%) = 6 : 1, what is the simplest formula of the compound, given th...Law of multiple proportions is not applicable for the oxide(s) of...When hydrocarbons are burnt completely in excess of oxygen gas, then...An organic compound "P" of molecular formula gives positive lodoform test but negative Tollen's test. When "P" is treate...Hydrogen cyanide, HCN, is prepared from ammonia, air and natural gas (CH4) by the following process. 2NH3(g) + 3O2(g) + ...