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All posts related to Solutions

Rahul Kandekar
Shared from 1. Solutions(12)_Old on Sep 09, 2018 10:01 PM

Elevation in the boiling point produced by 0.1 molal NaCl solution in water in Kelvin is (kb = 0.512)

 
0.52
0.052
5.2
1.86
Please type your answer before submitting.
Rahul Kandekar

NaCl(aq) -> Na Cl- As number of particles have doubled shouldn't the ans also double. so the ans should be 2*0.052 = 0.104 please correct me if i am wrong

Archisman Nandy
Shared from ASKE11_UT01 on Aug 13, 2018 3:22 PM

10 ml of liquid carbon disulphide (specific gravity = 2.63) is burnt in oxygen. Find the volume of the resulting gases measured at STP

 
11.2 litre
22.4 litre
44.8 litre
23.3 litre
Please type your answer before submitting.
Archisman Nandy

Can anyone explain this to me , the process is confusing

Sashank Cheekala
Shared from 1. Solutions(12)_Old on May 28, 2018 10:25 PM

The vapour pressure of a solvent decreased by 10 mm of Hg when a non-volatile solute was added to the pure solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent if the decrease in vapour pressure is required to be 20 mm of Hg?

 
0.4
0.8
0.6
0.2
Please type your answer before submitting.
Sashank Cheekala

Won't the answer be A cause it is asking the mole fraction of solvent and not solute ?

Nikhil P
Shared from 1. Solutions(12)_Old on May 22, 2018 3:09 PM

The vapour pressure of water decreases by 10% when a solute is dissolved in it. The approximate molarity of the solution is

 
10
5.5
2
2.5
Please type your answer before submitting.
Nikhil P

Shouldnt option A be the correct one?

Nirmal
Shared from 1. Solutions(12)_Old on Feb 22, 2018 10:54 AM

Which of the following solutions will exhibit highest boiling point?

 
0.1 M KNO3(aq)
0.01 M Na2O2(aq)
0.015 M glucose(aq)
0.015 M urea(aq)
Please type your answer before submitting.
Rahul Kandekar

The answer should be A. The explanation has taken a wrong value.

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