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  4. 20 mL of methane is completely burnt using 50 mL of oxygen. The volume of the gas left after cooling to room temperature is

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Q. $20\, mL$ of methane is completely burnt using $50\, mL$ of oxygen. The volume of the gas left after cooling to room temperature is

KCETKCET 2012Hydrocarbons

Solution:

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$\therefore $ Volume of gas left after cooling

$=10\, mL O _{2}+20\, mL CO _{2}=30 \,,mL$

$H _{2} O (g)$ will be condense to $H _{2} O (l)$ after cooling.