Related Questions
A solution is prepared by dissolving 20g of a non-volatile solute in 180g of water. If the vapor pressure of pure water at this temperature is 23.76 mmHg and the solution exhibits a vapor pressure of 23.52 mmHg, what is the molar mass of the solute? (Molar mass of water = 18 g/mol)
99 g/mol
198 g/mol
297 g/mol
396 g/mol
For the reaction, The normality of (mol.wt. = 189.7) solution prepared by dissolving 47.5 g in acid solution and diluting with to a total of 2.25 litre is :
0.222
0.111
0.333
0.444
What is the molarity of a solution containing 1 mole of solute in 500 mL of solution?
0.5 M
1 M
2 M
4 M
A binary liquid mixture of components A and B exhibits an azeotrope at a specific composition. Which of the following statements is ALWAYS true about this azeotropic mixture?
The composition of the vapor phase is identical to the composition of the liquid phase.
The boiling point of the azeotrope is the average of the boiling points of pure A and B.
The azeotrope can be separated into pure A and B by fractional distillation.
The azeotrope always shows a positive deviation from Raoult's Law.
If 20 g of solute is dissolved in 80 g of solvent, what is the mass percentage of the solute?
20%
80%
25%
40%
Weight of oxidized by 200 mL of 1 solution is :
30.4 g
15.2 g
60.8 g
158 g
g of a sample of required mL of in a titration in the presence of . Purity of is :
What weight of is needed to convertΒ Β into
12.41 g
6.20 g
24.82 g
3.10 g
A standard solution is one whose :
Concentration is 1
Concentration is unknown
Concentration is known
None of the above