Chemistry questions
29404 published questions with worked solutions.
- In the reaction 2A + B product, if active mass of B remains constant but active mass of A is doubled the rate of reaction will be
- Which of the following rate expression does not represent the rate of the reaction? 2N_2O_ 5(g) 4NO_ 2(g) + O_ 2(g)
- Oxalic acid is oxidized by acidified KMnO_4 as follows : 2MnO_4^- + 16H^+ + 5C_2O_4^ 2- 2Mn^ 2+ + 10CO_2 + 8H_2O The rate of this...
- A catalyst
- During the course of a chemical reaction the rate of reaction
- For the reaction 2N_2O_5 4NO_2 + O_2 rate and rate constant are 1.22 10^ -4 and 3.4 10^ -5 ,s^ -1 respectively, then the...
- In many reaction the reaction proceeds in a sequence of steps so the overall rate is determined by
- The rate for the first order reaction is 0.69 10^ -2 , mol ,L^ -1 ,min^ -1 and the initial concentration is 0.2 , mol ,L^ -1 ....
- Rate of a reactions
- The value of activation energy for a chemical reaction is primarily dependant on
- Energy of activation of an exothermic reaction is
- In the reaction 2A + B A_2B the rate of consumption of reaction A is
- A foreign substance that increases the speed of a chemical reacting s called
- The rate of a chemical reaction depends on
- The rate of chemical reaction is directly proportional to
- Pieces of wood burn faster than log of wood of the same mass because
- The rate of the reaction may be expressed by the following different ways. 1 2 d[A] dt = - 1 3 d[B] dt = -d[C] dt The reaction is
- The effect of catalyst in a chemical reaction is to lower the
- On increasing temperature of the reacting system by 10 degrees the rate of reaction almost doubles. The most appropriate reasons...
- If the rate of reaction between A and B is given by rate = k[A][B]^n then the reaction is