1
IIT-JEE 1985
Subjective
+4
-0
Five ml of 8N nitric acid, 4.8ml of 5N hydrochloric acid and a certain volume of 17M sulphuric acid are mixed together and made upto 2 litre. Thirty ml of this acid mixture neutralise 42.9 ml of sodium carbonate solution containing one gram of Na2CO3.10H2O in 100 ml of water. Calculate the amount in gram of the sulphate ions in solution.
2
IIT-JEE 1983
Subjective
+5
-0
The density of a 3 M Sodium thiosulphate solution (Na2S2O3) is 1.25 g per ml. Calculate

(i) the percentage by weight of sodium thiosulphate,

(ii) the mole fraction of sodium thiosulphate and

(iii) the molalities of Na+ and $$S_2O_3^{-2}$$ ions
3
IIT-JEE 1983
Subjective
+1
-0
Complete and balance the following equation:

Ce3+ + $$S_2O_8^{-2} \to $$ $$SO_4^{-2}$$ + Ce4+
4
IIT-JEE 1983
Subjective
+1
-0
Complete and balance the following equation:

$$Cr_2O_7^{2-}$$ + C2H4O $$\to$$ C2H4O2 + Cr3+
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