Question

10 litre of $O_2$ gas is reacted with 30 litre of $CO$ gas at STP. The volumes of each gas present at the end of reaction are :

• A. $CO\left(10litre\right),C{O}_2\left(20litre\right)$
• B. $O_2\left(5litre\right),C{O}_2\left(20litre\right)$
• C. $CO\left(20litre\right),C{O}_2\left(10litre\right)$
• D. $O_2\left(10litre\right),C{O}_2\left(20litre\right)$
• E. $O_2\left(10litre\right),CO\left(10litre\right)$

Answer 1

The correct option is A $CO\left(10litre\right),C{O}_2\left(20litre\right)$

When 10 litre of $O_2$ gas is reacted with 30 litre of $CO$ gas at STP. The volumes of each gas present at the end of reaction will be as:

$CO\left(g\right)+\frac{1}{2}{O}_2\left(g\right)\to C{O}_2\left(g\right)$
t=0 30 L 10 L 0
after reaction completed:

$(30-20)$ L $1020$ L.