How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO3? The concentrated acid is 70% HNO3.
1. 45.0 g conc. HNO3
2. 90.0 g conc. HNO3
3. 70.0 g conc. HNO3
4. 54.0 g conc. HNO3
Difficulty Level:
Find the molality of 15% (w/vol.) solution of H2SO4 of density 1.1g/cm3 :
1. 1.2
2. 1.4
3. 1.8
4. 1.6
Difficulty Level:
Which mode of expressing concentration is independent of temperature?
1. Molality
2. Percent by mass
3. Mole fraction
4. All of these
Difficulty Level:
The molality of 1M solution of NaCl ( specific gravity 1.0585 g/mL ) is:
1. 1.0585
2. 1.0
3. 0.10
4. 0.0585
Difficulty Level:
The total molarity of all the ions containing 0.1 M of CuSO4 and o.1M of Al2(SO4)3 is:
1. 0.2M
2. 0.7M
3. 0.8M
4. 1.2M
Difficulty Level: