19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
At equilibrium the concentrations of N 3.0 10 M x , O 4.2 10 M x and NO 2.8 10 M x in a sealed vessel at 800K. What will be Kc for the reaction, N g O g 2NO g ?
The following concentrations were obtained for the formation of NH3 from N2 and H2 at equilibrium at 500 K. N 1.5 10 M. x H 3.0 10 M x and NH 1.2 10 M. x Calculate the equilibrium constant. (a) 1.08 10 x (…
Molar concentration of different species is indicated by enclosing these in square bracket and it is implied that these are
At a given temperature, the product of …X… of the reaction products raised to the respective stoichiometric of coefficient in the balanced chemical equation …Y… by the product of concentrations of the reactants raised…
For a reaction, H g I g 2HI g c HI g K H g I g Point out the correct statement.
The equilibrium equation is also known as the …X… because in the early days of chemistry, concentration was called …Y… Here, (X) and (Y) refer to
A mixture of reactants and products in the equilibrium state is called
The active mass of 64 g of HI in a two litre flask would be
Equilibrium constant for the reaction H I 2HI is correctly given by the expression (a) c [H ][I ] K [HI] (b) c [H ][I ] K [2 HI] (c) c [H ][I ] K [HI] (d) c [HI] K [H ][I ]
Equilibrium constant for the reaction : 2NOg Cl g 2NOCl g is correctly given by the expression (a) [2 NOCl] K [2 NO][Cl ] (b) [NOCl] K [NO] [Cl ] (c) [NO] [Cl ] K [NO] [Cl ] (d) [NO] [Cl] K [NOCl]
The equilibrium constant in a reversible chemical reaction at a given temperature
The rate constant for forward and backward reactions of hydrolysis of ester are 1.1 × 10–2 and 1.5 × 10–3 per minute respectively. Equilibrium constant for the reaction is CH3COOC2H5 + H2O CH3COOH + C2H5OH
According to law of mass action rate of a chemical reaction is proportional to
In chemical reaction A B, the system will be known in equilibrium when
Equilibrium can be attained
“Use of isotope (deuterium) in the formation of ammonia clearly indicates that chemical reactions do not reach a state of dynamic equilibrium in which the rates of forward and reverse reactions are unequal and there i…
When the two reactions occur at the same rate, the system reaches
Chemical equilibrium is …(X)… in nature as it consists of a …(Y)… reaction in which the reactants give product(s) and ….(Z)… reaction in which products gives the original reactants. Here, (X), (Y) and (Z) refer to
CO gas CO insolution This equilibrium is governed by
The rate of dissolution of sugar is equal is equal to rate of crystallization of sugar can be represented as
When no more solute can be dissolved in solution at a given temperature is known as
The solid-vapour equilibrium can be represented as I. I2 (solid) I2 (vapour) II. Camphor (solid) Camphor (vapour) III. NH4Cl (solid) NH4Cl (vapour) Point out the correct option(s).
Which of the following statement is correct?
For any pure liquid at 1 atm pressure (1.013 bar), the temperature at which the liquid and vapours are at equilibrium is called normal …(X)… of the liquid. Here, (X) refers to
H O l H O vap. Point out the correct statement for this equilibrium