Chemical Equilibrium
When diluting acid always add
water to acid
acid to water
acid to oxygen
hydrogen to acid
acid to water
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Unit of equilibrium constant for H2 + I2 2HI isA. no units
B. mol dm-3
C. dm3mol-1
D. none of above
Unit of the equilibrium constant for N2O4 2NO2 is
A. mol dm-4
B. mol dm-3
C. dm3mol-1
D. mol dm-3
The state at which forward and reverse reactions occur at the same rate is
A. equilibrium
B. unstable equilibrium
C. not in equilibrium
D. neutral equilibrium
Due to the high concentration of reactants, the rate of the forward reaction is
A. lowest
B. moderate
C. highest
D. minimal
Substances which increase the rate of a chemical reaction are called
A. proteins
B. single cell protein
C. enzymes
D. catalysts
In the reverse reaction SO3 decomposes in to
A. S and O
B. S and O2
C. S2 and O
D. SO2 and O2
What is represented by each figure within a square bracket in the equilibrium expression?
A. concentration in mol.dm-3
B. volume of products
C. mass of products
D. mass of reactants
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