# 25g of an unknown hydrocarbon upon burning produces 88 g of $CO_{2}$ and 9 g of $H_{2}O$. This unknown hydrocarbon contains:Option 1)20 g of carbon and 5 g of hydrogen Option 2)22 g of carbon and 3 g of hydrogen Option 3)24 g of carbon and 1 g of hydrogen Option 4)18 g of carbon and 7 g of hydrogen

V Vakul

$C_{x}H_{y}+O_{2}\rightarrow xCO_{2}+yH_{2}O$

$\eta _{co_{2}}=\frac{88}{44}=2mole$

$\eta _{c}=2mole$

weight of carbon $W_{c}=2\times 12=24g$

Mole of water $\eta _{H_{2}}O=\frac{9}{18}=\frac{1}{2}$

weight of water $W_{1}t = \frac{1}{2}\times 2=1g$

Option 1)

20 g of carbon and 5 g of hydrogen

Option 2)

22 g of carbon and 3 g of hydrogen

Option 3)

24 g of carbon and 1 g of hydrogen

Option 4)

18 g of carbon and 7 g of hydrogen

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