Chemistry questions
29404 published questions with worked solutions.
- If 'a' is the initial concentration of the reactant, the half life period of the reaction of n^ th order is proportional to
- The relationship between half life and initial concentrations is given by
- Half life period of any first order reaction is
- A first order reaction is 50% completed in 30 minutes. The rate constant of the reaction is
- The rate of reaction A + B + C product is given by Rate = k ,[ A ]^ 1/2 [ B ]^ 1/3 [ C ]. The order of the reaction is
- For the reaction A C it is found that the rate of the reaction quadruples when the concentration of A is doubled. The rate for...
- If the rate of reaction between A and B is expressed as k ,[ A ][ B ]^2, the reaction is
- What is the order of a reaction which has a rate expression Rate =k ,[ A ]^ 3/2 [ B ]^ -1 ?
- The order of reaction can be deduced from
- The reaction L M is started with 10 g of L. After 30 and 90 minutes, 5 g and 1.25 g of L are left respectively. The order of...
- For the reaction A B when concentration of A is made 1.5 times the rate of reaction becomes 1.837 times. The order of reaction is
- For producing effective collisions the colliding molecules must have
- The formation of SO_3 from SO_2 and O_2 takes place in the following steps: 1. 2SO_2 + 2NO_2 2SO_3 + 2NO 2. 2NO + O_2 2NO_2
- Collision theory is satisfactory for _________
- The minimum energy needed to convert a reactant into product is called
- The rate of the first order reaction A products is 0.01 M/s, when reactant concentration is 0.2 M. The rate constant for the...
- A chemical reaction is the result of
- The slope of a graph [ A ]_t versus t for a first order reaction is -2.5 10^ -3 s^ -1 . The rate constant for the reaction will be
- A catalyst increases the rate of the reaction by
- The Arrhenius equation is