Chemistry questions
29404 published questions with worked solutions.
- The half life of a first order reaction is 30 min and the initial concentration of the reactant is 0.1 M. If the initial...
- Molecularity of an elementary reaction
- The term - dx dt in the rate expression refers to the
- In general, with every 10^ rise in temperature, the rate of reaction becomes approximately
- A catalyst increases the rate of the reaction by
- The rate constant of a reaction does not depend upon
- Consider the reaction 2NO(g)+O_2(g) 2NO_2(g) . If d[ NO_2 ] dt =0.052 M/s then - d[ O_2 ] dt will be
- In pseudo-unimolecular reactions
- Molecularity of the reaction
- Unit of rate of reaction is
- If the rate of reaction between A and B is given by rate =k[ A ][ B ]^2, then the reaction is
- The rate of a chemical reaction can be expressed in terms 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
- The activation energy of a reaction is zero. The rate constant of the reaction
- The rate of reaction is expressed in the units
- Chemical kinetics, a branch of physical chemistry, deals with
- The rate of the reaction CCl_3CHO + NO CHCl_3 + NO + CO is given by the equation, r=k ,( CCl_3CHO )[ NO ]. If concentration...
- The unit of rate constant for first order reaction is
- The rate constant of a reaction depends on
- Order of reaction is