Characteristics of Chemical Equilibrium
Trending Questions
Q. To an evacuated vessel with movable piston under total pressure of 1 atm, 0.1 mol of He and 1.0 mol of an unknown compound (vapour pressure = 0.68 atm at 0∘C) are introduced. Considering the ideal gas behaviour, the total volume (in litre) of the gases at 0∘C is close to (nearest integer)
Q. The rate of diffusion of ozonized oxygen is 0.4√5 times that of pure oxygen. What is the percent degree of association of oxygen assuming that only pure O2 is present in the sample initially?
- 20
- 40
- 60
- none of these
Q. Pure phosphine originally present at 2.5 atm and 300 K decomposes slowly according to the equation:
4P H3(g)⇌P4(g)+6H2(g)
What is the vapour density of phosphine if it dissociates to the extent of 40%?
4P H3(g)⇌P4(g)+6H2(g)
What is the vapour density of phosphine if it dissociates to the extent of 40%?
- 13.07
- 22.17
- 18.07
- 19.2
Q. The state in which two opposing chemical reactions continue but the net change in rate is zero is the state of:
- Oxidation
- Reduction
- Complete Ionization
- Equilbrium
Q. Which of the following is true at equilibrium?
- The reaction stops at equilibrium
- The rate of forward reaction is greater than the rate of the reverse reaction.
- Amounts of reactants and products are equal.
- Amount of reactants and products are constant.
Q. What is the nature of Chemical equilibrium ?
- Static
- Dynamic
- Irreversible
- Both b and c
Q. Statement 1: For a chemical reaction at initial stage rate of forward reaction (rf) is greater than rate of reversed reaction (rb)
Statement 2: When rf=rb, chemical reaction is at equilibrium.
Statement 2: When rf=rb, chemical reaction is at equilibrium.
- Statement 1 is true but statement 2 is wrong
- Statement 2 is true but statement 1 is wrong
- Both statement are true
- None of above statement are true
Q. In the chemical reaction A⇌B, the system is said to be in equilibrium when:
- A completely changes to B
- 50% of A changes to B
- The rate of change of A to B and B to A are same
- Only 10% of A changes to B
Q. Ammonium carbamate when heated to 2000C gives a mixture of NH3 and CO2 with vapour density of 13.
NH2−O||C−ONH4 (s)⇌2NH3(g)+CO2(g)
The degree of dissociation of ammonium carbonate is:
NH2−O||C−ONH4 (s)⇌2NH3(g)+CO2(g)
The degree of dissociation of ammonium carbonate is:
- 1
- 0.5
- 0.75
- 0.9
Q. Which graph is showing the equilibrium condition ?
- None of these
Q. Statement 1: For a chemical reaction at initial stage rate of forward reaction (rf) is greater than rate of reversed reaction (rb)
Statement 2: When rf=rb, chemical reaction is at equilibrium.
Statement 2: When rf=rb, chemical reaction is at equilibrium.
- Statement 1 is true but statement 2 is wrong
- Statement 2 is true but statement 1 is wrong
- Both statement are true
- None of above statement are true
Q. The equilibrium constant for the reaction is H2+Br2→2HBr at 1024 k is 1.60×105. Find the equilibrium pressure of all gases if 10 bar of HBr is introduced into a sealed container at 1024 K.
- 10 bar
- 20 bar
- 15 bar
- 17 bar
Q. There is no change in entropy for an adibatic process
- True
- False
Q.
Which of the following graphs are correct for the given reaction; H2(g)+CO2(g)⇌H2O(g)+CO(g)
Assume initially only H2 and CO2 are present :