Question

The [H3O+] concentration in the 200 ml. H2SO4 solution is 1 M. How much H2so4
is dissolved in the solution ? [H = 1, 0 = 16, S = 32 gram/mole]
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Answer 1

Answer:

1000 ml.of 1M H2SO4 contains= 98 g

So 200 ml of 1M H2SO4 contains =98/5= 19.6 g.

1 mole of H2SO4 contains= 2 moles of [H3O+] .

So the Solution containing 1M of [H3O+] in 200 ml = 19.6/2

= 9.8g

Explanation:

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Answer 2

Using formula of molarity =no. of mole of solute/

volumeof solution in litre

Molarity =1M

Molar mass of H2SO4=2+32+64=98mol/g

we know that,no.of mole =given mass of solute/vol.of solute

let mass of solute be B

then, no. of mole =B/98

1=B/98×1000/200

B=98×200/1000

=98/5=19.6g