Chemistry Question Bank

What is the oxidation number of Fe in Fe(CO)5?

The oxidation number of Cr in [Cr(C6H6)2] is

The oxidation number of Co in [Co(en)3]2(SO4)3 is

The oxidation number of Fe in K3[Fe(CN)5NO] is (assume NO as a neutral)

In the complex ion [Fe(H2O)5NO]2+

What is the coordination number of cobalt in [Co(NH3)6]Cl3?

The coordination number of Fe in K4[Fe(CN)6] is

The coordination number of Ag in [Ag(NH3)2]Cl is

Show the coordination number of the metal ion in complex K4[Fe(CN)6].

What is the structural formula of lithium tetra- hydridoaluminate?

For a single step reaction; A + 2 B ⟶ Products, the molecularity is

Which one of the following statements is incorrect about the molecularity of a reaction?

For a reaction X + Y ⟶ Z, rate[X]. What is (i) molecularity and (ii) order of reaction?

The following mechanism has been proposed for a reaction. 2P Q R S P Q T R Slow P T R fast -> -> -> The rate law expression for the reaction is (a) r k P Q (b) r k P (c) r k P T (d) r k P Q

For a reaction, 2NO 2H N 2H O, -> the possible mechanism is 2NO N O slow N O H N O H O -> fast N O H N H O -> What is the rate law and order of the reaction? (a) Rate = [N2O2], order =

The chemical reaction, proceeds as O O [O] (fast) [O] O 2O -> (slow) The rate law expression will be

In the sequence of reaction k k k A B C D -> -> -> k3 > k2 > k1, then the rate determining step of the reaction is :

The overall rate of the reaction is controlled by the ______ step in a reaction. Choose the suitable word to fill the blank.

For the reaction 2A + B ⟶ D + E the following mechanism has been proposed : A + B ⟶ C + D (slow) A + C ⟶ E (fast) The rate law expression for the reaction is

…A… reactions involves a sequence of elementary reactions in the formation of product. Here, A refers to

The reactions taking place in one step are called …A… reactions. Here, A is

molL mol Ls s molL x A B C

molL s s molL x C. Second order reaction

molL molL s s molL x B. First order reaction

The rate constant for a first order reaction is 4.606 10 s x . The time required to reduce 2.0 g of the reactant to 0.2 g is: (NEET 2020)