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Standard XII
Chemistry
Van't Hoff Factor
26 Expression...
Question
26 Expression relating mole fraction and molality is(A: solute and B ; solvent)cted35ce ofХв X1000gme is(2) mXAX1000(1-XA)MB(1) m(1-XA)MBmMB1-mMB(4) None of these(3) XB
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Q.
The expression relating molality (
m
) and mole fraction (
x
2
) of solute in a solution is:
Q.
The expression relating mole fraction of solute (
x
2
) and molarity (
M
) of the solution is:
Q.
The expression relating to mole fraction of solute
(
x
2
)
and molarity (M) of the solution is:
Q.
A solution is made with Solvent A (molar mass 40 g/mol) by slowly adding solute B. A curve is plotted between molality of the solution vs
x
B
x
A
where
x
B
and
x
A
represents the mole fraction of solute and solvent respectively.
Calculate the slope of the curve.
Q.
Assertion (A): On increasing the temperature, the milli-moles of solute, milli-equivalent of solute, molality, mole fraction of solute and % by weight does not change.
Reason (R): Each of these involves only weights of solute and solvent.
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