Question

vapour density of sox is 40 find x

Answer 1

The formula used is:
2Xvapour density=mass of molecule.
mass of S=32.0,oxygen=16
2 X 40=32.0+16 X x
after solving we get x=3
so the formula will be SO3

hope that helps, have a nice day.

Answer 2

Answer: $x = 3$

Explanation:

Relation between vapour density and molecular weight is:

$2 * vapour density = Molecular weight$

As the vapour density is given $40$, therefore molecular weight is:

$Molecular weight = 2* 40 = 80$

Molecular weight of $SO_{x}$ can be also be calculated as:

Molecular weight of $SO_{x}$ = Atomic weight of S $+$ Atomic weight of O * x  = $32 + 16 x$

∴ $32 + 16 x = 80$

$16 x = 80 -32 = 48$

$x = \frac{48}{16} = 3$

It means number of oxygen atoms are $3$.

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