1
IIT-JEE 1993
Fill in the Blanks
+1
-0
Ca2+ has a small ionic radius than K+ because it has ______.
2
IIT-JEE 1993
Subjective
+3
-0
Give briefly the isolation of magnesium from sea water by the Dow process. Give equations for the steps involved.
3
IIT-JEE 1993
Subjective
+3
-0
What weight of the non-volatile solute, urea(NH2 - CO - NH2) needs to be dissolved in 100g of water, in order to decrease the vapour pressure of water by 25%? What will be the molality of the solution?
4
IIT-JEE 1993
Subjective
+2
-0
The standard reduction potential for the half-cell
$$NO_3^-$$ + 2H+ (aq) + e $$\to$$ NO2 (g) + H2O is 0.78 V
(i) Calculate the reduction potential in 8 M H+
(ii) What will be the reduction potential of the half-cell in a neutral solution? Assume all the other species to be at unit concentration.
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