Question

Calculate the volume of ammonia gas produced at STP when 140g of nitrogen gas reacts with 30g of hydrogen gas.(atomic mass: N=14u,H=1u) how to do this?

Answer 1

Ans:`color(red)((10×22.4L=224"L")`

Explanation:

Simply, the reaction is `N_2+3H_2=2NH_3`
`140g` `"N"_2` means `140/28=5` mol;
`30g` `H_2` means `30/2=15`mol
From 1 mol of `N_2` 2 mol `NH_3` is prepared in perfect presence of `H_2`
Hence, `10`mol of `NH_3` will be produced.
We know,1mol of any ideal gas at STP (`0^@ "C"` and `"1 atm"`) contains 22.4L of the ideal gas.

Produced ammonia is `224" L"`.