Chemical Equilibrium Test 01
Total Questions: 27
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A ) Products never recombine to form reactants ✅
B ) They never complete
C ) They proceed in both ways
D ) They have a double arrow between reactants and products
A ) The concentration of reactants and products becomes equal
B ) The opposing reactions ( forward and reverse) stop
C ) The rate of the reverse reaction becomes very low
D ) The rates of the forward and reverse reactions become equal ✅
A ) reaction mixture consists of almost all products ✅
B ) reaction mixture has almost all reactants
C ) reaction has not gone to completion
D ) reaction mixture has negligible products
A ) equilibrium will never establish
B ) all reactants will be converted into products
C ) reaction will go to the completion
D ) The amount of products is negligible ✅
A ) Very small Kc value
B ) Very large Kc value
C ) moderate Kc value ✅
D ) None of the above
A ) The reaction stops to proceed
B ) The amounts of reactants and products are equal
C ) The speeds of the forward and reverse reactions are equal ✅
D ) The reaction can no longer be reversed
A ) never establishes ✅
B ) establishes before the completion of reaction
C ) establishes after the completion of reaction
D ) establishes rapidly
A ) Proceeds from left to right
B ) in which reactants react to form products
C ) slows down gradually
D ) speeds up gradually ✅
A ) mol dm-³
B ) mol-¹ dm-³
C ) mol-¹ dm³ ✅
D ) mol dm³
A ) irreversible reactions ✅
B ) reversible reactions
C ) decomposition reactions
D ) addition reactions
A ) rate of reaction is directly proportional to active mass
B ) active mass is taken in molar concentration
C ) active mass is represented by square brackets
D ) active mass means total mass of substances ✅
A ) irreversible reactions
B ) reversible reactions ✅
C ) decomposition reactions
D ) additional reactions
A ) purple ✅
B ) black
C ) red
D ) pink
A ) colourless ✅
B ) black
C ) red
D ) pink
A ) Chemical equilibrium ✅
B ) Static equilibrium
C ) both a and b
D ) none of the above
A ) chemical equilibrium state
B ) static equilibrium state ✅
C ) dynamic equilibrium state
D ) all of the above
A ) 1860
B ) 1869 ✅
C ) 1870
D ) 1879
A ) 80%
B ) 90%
C ) 95%
D ) 99% ✅
A ) N2 ✅
B ) O2
C ) Cl2
D ) S
A ) N2
B ) O2 ✅
C ) CI2
D ) CO2
A ) Completion ✅
B ) equilibrium state
C ) backward
D ) none of the above
A ) carbon and nitrogen
B ) nitrogen and oxygen ✅
C ) oxygen and chlorine
D ) none of the above
A ) irreversible reactions
B ) reversible reactions ✅
C ) addition reactions
D ) decomposition reactions
A ) irreversible reactions
B ) reverse reactions ✅
C ) forward reactions
D ) decomposition reactions
A ) Irreversible
B ) Reversible ✅
C ) Non-creative
D ) Dynamic
A ) reactants ✅
B ) products
C ) masses
D ) materials
A ) iconic product of water
B ) equilibrium constant ✅
C ) reaction quotient
D ) proportionality constant