Among mass, volume, density and specific volume of a gas, the intensive properties are
1. Density and specific volume
2. Volume and density
3. Specific volume and mass
4. Density only
The heat of formation of HCl(g) from the reaction
H2(g) + Cl2(g) ; is
1. +44 kcal
2. -44 kcal
3. +22 kcal
4. -22 kcal
If a chemical change is brought about by one or more methods in one or more steps, then the amount of heat absorbed or evolved during the complete course of reaction is same, which ever method was followed. This law is known as-
1. Le Chatelier's principle
2. Hess's law
3. Joule Thomson effect
4. Trouton's law
If 1.00 kcal of heat is added to 1.2 L of oxygen in a cylinder at constant pressure of 1.000 atm, the volume increases to 1.5 L, Hence for this process is:
1. 0.993 kcal
2. 1.0073 kcal
3. 0.0993 kcal
4. 1.00073 kcal
Heats of combustion of are -890, -1411 and -1560 kJ/mole respectively. Which has the lowest fuel value in kJ/gm ?
1.
2.
3.
4. All same
The standard heat of combustion of a hydrocarbon compound is an/a-
1. Extensive property
2. Colligative property
3. Intensive property
4. Constitutive property
The temperature of 5 ml of a strong acid increases by when 5 ml of a strong base is added to it. If 10 ml of each is mixed, temperature should increase by-
1.
2.
3.
4. cannot be known
The heat of neutralisation of HCl by NaOH is -55.9 kJ/mole. If the heat of neutralisation of HCN by NaOH is -12.1 kJ/mole, then energy of dissociation of HCN is-
1. -43.8 kJ
2. 43.8 kJ
3. 68 kJ
4. -68 kJ
Using only the following data:
(I)
(II)
the value, in kilojoules, for the reaction
is calculated to be:
1. -43.3
2. -10.3
3. +6.2
4. +10.3