A catalyst is a substance which
A.increases the equiliibrium concentration of the product
B.changes the equilibrium constant of the reaction
C.shortens the time to reach equilibrium
D.suppliies energy to the reaction.
A.increases the equiliibrium concentration of the product
B.changes the equilibrium constant of the reaction
C.shortens the time to reach equilibrium
D.suppliies energy to the reaction.
A.Temperature
B.Concentration of reactants
C.Catalyst
D.Number of molecules of reactants taking part in a reaction.
A.heat of reaction
B.heat of formation of the product
C.activation energy
D.equilibrium constant.
A.decreases the activation energy
B.alters the reaction mechanism
C.increases the frequency of collisions of reacting species
D.all of these answers.
A.depends on the unit of time
B.has units of reciprocal time
C.does not change on changing the concentration units
D.all of the above
A.law of gaseous volumes
B.law of Avogadro
C.law of constant proportions
D.law of conservation of mass
A.thermo-nuclear reaction
B.endothermic reaction
C.exothermic reaction
D.photochemical reaction
A.The concentration of the reactant at equilibrium conditions is zero
B.the fractional conversion of the reactant at equilibrium conditions is zero
C.the equilibrium constant is zero
D.the equilibrium constant is one