Chemistry, asked by zunaimmalik, 10 months ago

4 g of hydrogen reacts with 20 g of oxygen to form
water. The mass of water formed is

Answers

Answered by amitvikram1

total mass of hydrogen and oxygen after reaction is 24 gram and it from the water molecule

zunaimmalik: no bro the answer is 22.5

Rudresh07: Than why you marked it brainliest

zunaimmalik: by mistake bro

Rudresh07: Ok bro

Answered by Rudresh07

Here O2 is limiting reagent

Moles of water form = moles of O2

= 1.25 mole

I.e mass of water form = 18×1.25= 22.5 gm

amitvikram1: why you don't have the H2 molecules

Rudresh07: Because in this reaction O2 is fully used without using full H2 molecule

Rudresh07: In this case O2 is limiting

amitvikram1: limiting means

Rudresh07: It is concept of class 11 which tells that in a reaction the compound whose mole is less will form product equal to its mole

Rudresh07: e.g A+B = C Ais 1 mole & B is 0.5 mole here B is limiting so C would form equal toB and some A would be left here B is limiting

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