Question

If co2 and oxygen are mixed in the mole ratio 1:9 , the density (g/L) of the gas at stp is?

Answer 1

mass : volume = density

Answer 2

\[\huge{density=\frac{mass}{volume}}\]

Answer 3

So how to connet these

Answer 4

22.4 L ---> 1 mole at STP
1 mole means we can take its molecular mass

Answer 5

calculate the volume of CO2 and O2 ::::

(22.4 L * 1 ) + (22.4 L * 9) = 224 L

Calculate the mass of CO2 and O2 :

CO2 = 12 + 16(2) = 44 g.
O2 = 16*2 = 32 g.

can u calculate the density now ?

Answer 6

sorry it is oxygen not o2

Answer 7

Plz read the question Now...

Answer 8

and sorry the asnwer should be 1.5

Answer 9

i think that should be o2 ... as i am getting 1.5 if that is o2 ..

Answer 10

ok then plz show hw u got it...

Answer 11

for oxygen and not o2 we have : mass = 44g + 9(16)g = 44g + 144g= 188g
and total volume : 224 L ( it will remain same )
188/224 is not equal to 1.5

Answer 12

But for O2

Answer 13

hey @mathslover is it 22.4L

Answer 14

But u have written 224L.............why?

Answer 15

we have total mass : 44g + 9(32)g =44g + 288g = 332 g
total volume : 10(22.4L) = 224 L

density = 332/224 = 1.5..

Answer 16

yup got it thxxx

Answer 17

@Yahoo! we have supposed to have total no. of moles = 10 hence
1 mole of co2 and 9 moles of o2 = 1(22.4)+9(22.4)=22.4(1+9)=22.4*10 = 224 L

Answer 18

nice to see that u have got that.... gr8