 
       
      
    4.4 The conversion of molecules X to Y follows second order kinetics. If concentration of X is increased to three times how will it affect the rate of formation of Y ?
 
                
                  The order of a reaction means the sum of the power of concentration of the reactant in rate law expression.
So rate law expression for the second-order reaction is  here R = rate
if the concentration is increased to 3 times means 
new rate law expression =  = 
=  9R
the rate of formation of Y becomes 9 times faster than before
 
                 
                