arrange the following aqueous solutions in terms of their osmotic pressure at a particular temperature:0.1(M) HCl,0.1(M) glucose,0.1(M) sucrose,0.1(M) BaCl2.
Answers
Explanation:
The given statement is true.
The increasing order of osmotic pressure of 0.1M aqueous solution containing different electrolyte is as follows 0.1 M glucose < 0.1M sodium chloride <0.1M magnesium chloride.
The osmotic pressure π=iCRT, where
′
i
′
is the vant Hoff's factor, C is molar concentration, R is ideal gas constant and T is absolute temperature. Since, C,R and T have same values for different solutions, the solution having higher value of
′
i
′
will have higher value of the osmotic pressure.
′
i
′
represents the number of ions obtained from 1 solute molecule. The ionization one molecule of glucose, sodium chloride and magnesium chloride gives 1, 2 and 3 ions/particles. Glucose is non-electrolyte and does not undergo dissociation.
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Answer:
BaCl2>HCl >glucose =sucrose