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If at a particular tempreture, the densi...

If at a particular tempreture, the density of `18M` `H_(2)SO_(4)` is `1.8g Cm^(-3)`, calcualte:
(a) Molality,
(b) `%` concentration by weight of solution
(c ) Mole fraction of water and `H_(2)SO_(4)`,
(d) Relative decrease in vapour pressure with repsect to `H_(2)O` solvent assuming `H_(2)SO_(4)` almost unionised at this high concentration.

Text Solution

Verified by Experts

The correct Answer is:
(a) `500` molal, (b) `98%`, (c ) `H_(2)SO_(4) = 0.9, H_(2)O = 0.1`, (d) `0.9`;
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If at a particular temperature, the density of 18MH_(2)SO_(4) is 1.8g cm^(-3) , calculate (a) molality, (b) % concentrating by weight of solute and solvent (c) mole fraction of water and H_(2)SO_(4) .

An aqueous solution of H_(2)SP_(4) has density 1.84 g/mL. Solution containso 98% H_(2)SO_(4) by mass. Calculate : (i) molarity of solution (ii) overall molarity of solution (iii) molar volume (iv) specific volume (v) relative, decrease in vapour pressure with respect to water, assuming H_(2)SO_(4) as non-electrolyte at his high concentration.

Knowledge Check

  • At 25^@ , the density of 15 M H_(2)SO_(4) is 1.8 g cm^(-3) .Thus mass percentage of H_(2)SO_(4) in aqueous solution is

    A
    ` 2% `
    B
    ` 81.6% `
    C
    ` 18% `
    D
    ` 1.8% `

  • The molarity of 98 % H_(2)SO_(4) (d = 1.8 g/mL) by wt.is

    A
    6 M
    B
    18 M
    C
    10 M
    D
    4 M

  • The molarity of 98% by wt. H_(2)SO_(4) (d = 1.8 g/ml) is

    A
    6 M
    B
    18 M
    C
    10 M
    D
    4 M

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    An aqueous solution of H_(2)SO_(4) has density 1.84" g"//"ml" . Solution contains 98% H_(2)SO_(4) by mass.Calculate (i) Molarity of solution (ii) Molar volume of solution (iii) Relative lowering of vapour pressure w.r.t. water, assuming H_(2)SO_(4) as non-electrolyte at this high concentration.

    How many moles of H_(2)SO_(4) are present in 4.9g H_(2)SO_(4) ?

    Molarity of H_(2)SO_(4) is 0.8 and its density is "1.06 g/cm"^(3) . What will be its concentration in terms of molality and mole fraction ?

    Molarity of H_(2)SO_(4) is 0.8 M and its density os 1.06 g//cm^(3) . What will be the concentration in terms of molality and molar fraction ?

    The molarity of H_(2)SO_(4) is 18 M. Its density is 1.8 g mL^(-) . Hence, molality is:

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