Chemistry, asked by Anonymous, 1 year ago

7.5g of gas occupies 5.6 litres at STP the gas is

Answers

Answered by shanju

255

given mass of gas =7.5g
volume=5.6l
STP=22.4l
so 22.4/5.6*7.5=30g=mol.Wt of gas
the gas is NO (nitric oxide)

Anonymous: 1.NO

Anonymous: 2.N2O

Anonymous: 3.CO

Anonymous: 4.CO2

shanju: i think it is CO

Angella: No, is NO. It cannot be CO because the molded

Angella: oops! because the *molecular weight of CO is 28 and not 30.

Angella: I mean, " No, it is NO. It cannot be CO because the molecular weight of CO is 28 and not 30 " Hope, I've sounded a bit clearer now. ;)

shanju: kk

Anonymous: anyways thanks :)

Answered by Angella

167

At STP,
5.6 litres is occupied by 7.5g of a gas
Then,
22.4 litres is occupied by
(22.4 × 7.5)/5.6 = 30 g of that gas

So, the molecular weight of the gas = 30g

The molecular weight of NO (Nitric oxide) is also 30g.

So, perhaps the gas is NITRIC OXIDE.

Anonymous: thanksssssssssssssssssssssssssssssssssssssss

Angella: Pleasure! ;)

Anonymous: one more help

Angella: Yes?

Anonymous: i wrote it on ur profile dear

Angella: oh, okay.

Anonymous: will u do

Anonymous: ???

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