Search
.Management Sciences
Category: Stoichiometry
Pick out the correct conversion?
A. 1 BTU =453.6 calories
B. 1 BTU = 252 calories
C. 1 calorie = 252 BTU
D. 1 calorie = 453.6 BTU
Pick out the correct statement ?
A. Heat of solution is always positive
B. At equilibrium, ΔG is zero
C. For the reaction, PCl5 ⇌ PCl3 + Cl2, ΔG is less than ΔE
D. The heating of water in a beaker is an example of an isolated system
In a binary liquid system, the composition expressed as _______________ is independent of the temperature & pressure?
A. Kg of solute/kg of solvent
B. Kg-mole of solute/kg-mole of solvent
C. Kg-mole of solute/1000 kg of solvent
D. All A., B. & C.
Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature ?
A. Chlorine
B. Nitrogen
C. Ethane
D. All the gases will have the same KE
If pH value of a solution is 8, then its pOH value will be ____________________?
A. 6
B. 1
C. 7
D. 10
Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of________________?
A. Mixing
B. Adsorption
C. Wetting
D. Complete wetting
Boiling point of a non-homogeneous mixture of immiscible liquids is _____________ that of any one of its separate components?
A. Lower than
B. Higher than
C. Equal to
D. Either A. or B.; depends on the liquids
Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution) ?
A. log (1/H+)
B. – log (1/H+)
C. 1/log H+
D. None of these
The most convenient way of expressing solution concentration is in terms of___________________?
A. Mole fraction
B. Normality
C. Molality
D. Molarity
Isotonic solutions must have the same__________________?
A. Viscosity
B. Molar concentration
C. Normality
D. Critical temperature
Recent Comments