The number of molecules of the reactants taking part in a single step of the reaction tells about. :

Which of the following statement true for molecularity of a reaction? It is sum of exponents of the molar concentration of the reactants in the rate equation, It may have a fractional value, It is the number of molecules of the reactants taking part in a single step chemical reaction, It is determined experimentally

The rate of a chemical reaction tells us about :

Number of reactant molecules taking part in a reaction is

If two reactants part in a reaction, then: