33. Which property of water is unchanged when a small quantity of sodium chlorid

Question

33. Which property of water is unchanged when a small quantity of sodium chloride is added to it? (A) color (C) melting point (B) boiling point (D) osmotic pressure Normal saline is a solution of 0.90 % w/v ofNaCL Ifthis often-used IV fluid were to be poured into a cup, what would the concentration of NaCl be? 34. exactly 0.90 % w/v (B) (D) less than 0.90 % w/v (A) (C) more than 0.90 % w/v cannot be determined 35. To prevent damage to blood cells, blood should be diluted in solutions that are (A) apotonic (C) hypotonic . (B) hypertonic (D) isotonic 36. What is the charge of the cation in Fe20,? (B) 2+ (D) 6+ (C) 3+ (A) 3-

Explanation / Answer

33. melting point , boiling point , osmatic pressure are coligative properties . They are depends upon the particles.

   A. Colour

34. A. less than 0.9%(w/v)

35. hypotonic

36. Fe2o3

The oxidation state of oxygen is -2

2x+(-2*3) = 0

2x-6 = 0

2x = 6

x = +3

C. +3

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