Molality
Trending Questions
What are the three ways to measure the concentration of a solution?
The mole fraction of glucose in an aqueous binary solution is. The mass percentage of water in it, to the nearest integer, is.
How many grams of conc. Nitric acid solution should be used to prepare of ?Given the concentrated acid is .
The density of a gas at S.T.P. is 1.40 grams per litre. The molecular weight of the gas is
30
28
35
31.4
What is seminormal and decinormal?
In which mode of expression, the concentration of a solution remains independent of temperature?
Molarity
Normality
Formality
Molality
A normal solution is:
is that whose concentration is known
one gram equivalent mass of the substance in one liter solution
one gram equivalent mass of the substance in mL of the solution
one gram molecular mass of the substance in one liter solution
Can the Molarity and molality of a given solution (solute + solvent) be equal?
True
False
Calculate milli-moles of solute in 350 ml solution which is 0.75 M.
26.25
2.625
262.5
0.2625
What is the significance of percentage compoÂsition?
Percent by mass of a solute (molar mass = 28 g) in its aqueous solution is 28. Calculate the mole fraction (X) and molality (m) of the solute in the solution.
X = 0.8, m = 1259
X = 0.2, m = 1259
X = 0.8, m = 10
X = 0.2, m = 10
(Molar mass of urea = 60 g/mol)
- 0.33 m
- 0.78 m
- 0.17 m
- 0.24 m
Calculate Molarity of a solution having 50 milli moles dissolved in 10 mL of solution.
5
1
0.2
50
- 1.78 M
- 2.00 M
- 2.05 M
- 2.22 M
- 36
- 200
- 500
- 18
Molality (in mol/kg) of a solution in which 0.13 mole of solute is dissolved in 500 gm of water is:
13
1.3
2.6
0.26
(IIT-JEE, 1988)
- Molarity
- Normality
- Formality
- Molality
Which of the following correctly represents the composition of the solutions?
- 1.00 g of NaCl + 100g of water
- 0.11g of NaCl + 100g of water
- 0.0l g of NaCl + 99.99g of water
- 0.10 g of NaCl + 99.90g of water
What are Molarity and molality represented by respectively?
m, M
M, m
Mo, mol
ar, al
Can the Molarity and molality of a given solution (solute + solvent) be equal?
True
False
- 2.05 M
- 2.22 M
- 2.00 M
- 1.78 M
Do you know the molecular mass of glucose and its structural formula?
160,
180,
180,
180,
Calculate Molality (in M) of a solution in which 36 gm glucose is dissolved in 500 gm water.
0.8
0.4
0.2
0.36
- 16g mol−1
- 64g mol−1
- 32g mol−1
- 4g mol−1
(IIT-JEE, 1986)
- 1000 g of solvent
- 1 L of solvent
- 1 L of solution
- 22.4 L of solution
Which of the following variables are sufficient to calculate molality?
Mass of solute
Moles of solute
Moles of solvent
Mass of solvent
Which of the following formulae are correctly mentioned?
Molarity=Number of moles of solventvolume of solvent (litres)
Molarity=Number of moles of solventvolume of solute (kg)
Molarity=Number of moles of solutevolume of solution (litres)
Molality=Number of moles of soluteMass of solvent (kg)
- 2.11 g/cc
- 1.11 g/cc
- 12.2 g/cc
- 20.4 g/cc