Question

At STP 11.2L oxygen is needed to convert a 6g solid element 'A' to its gaseous oxide completely. If the volume of that oxide produced be 11.2L at STP, find the molecular mass of that oxide.Please solve this sum...​

Answer 1

Answer:

Molar Mass of oxide is 12g

Explanation:

Given

Given Volume at STP = 11.2 L

Given mass = 6g

Volume at STP = 22.4L

As we know ,

No. of moles of oxide = Given Volume/Volume at STP

$no \: of \: moles \: = \frac{11.2l}{22.4l}$

No. of moles of oxide = 0.5 mol

Now,

No. of moles of oxide = Given Mass/Molar Mass

0.5 = 6g/ Molar mass

Molar mass of oxide = 6/0.5 g = 12g

Molar mass of oxide = 12 g