For the reaction A+2B->3C, assumt that it follows the stochiometric relation given.
1) What is the order of the reaction in B?
2) Write down the the expression for the rate of disappearance of B and the rate of appearance of A.
Given reaction is
A + 2B 3 C
(1) we need to calculate order of the reaction in B followed by stoichiometric relation. In reaction ,stociometric coefficient of B is 2 so order of the reaction in B will be 2
2) From rate law, we need to write rate of disappearance of B and the rate of appearance of A
From rate law we put negative sign in reactants as a rate of disappearance and positive sign in products as a rate of appearance.
Because A & B are reactants so for both we can write rate of disappearance not rate of appearance.
Since C is product so we can write rate of appearance.
Rate of disappearance of A = -d[A]/ dt
Rate of disappearance of B = -1/2 d[B] / dt
Rate of appearance of C = + 1/3 d[C] / dt
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