1.

One mole of calcium ion A. Is equivalent to two osmoles of calcium. B. Has the same mass as two equivalents of calcium ion. C. Is present in one litre of a normal solution of calcium ions. D. Weighs 40 grams. E. Depresses the freezing point of water to the same extent as one mole of sodium ion. 

Answer»

A. False One mole of any ion in solution exerts one osmole of osmotic pressure. 

B. True Because calcium is divalent. 

C. False A normal solution has one equivalent weight of ion per litre. 

D. True This is the atomic weight in grams. 

E. True 1 osmole of a substance in 1 litre of water depresses the freezing point by 1.86°C.



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