chapter 1 Chemical reactions and Equations/full explanation / NCERT Class 10 Chemistry/One shot 2023

A chemical reaction may b reversible in nature. State the meaning of the term in italics. Give a reason why a catalyst is used in certain chemical reactions. Give a balanced equation for the following - a. A reversible catalytic reaction involving- i. nitrogen as one of the reactants ii. Sulphur dioxide as one of the reactants.

Write one chemical equation each to examplify the following reactions : Carbylamine reaction

The order of reaction is an experimentally determined quanity. It may be zero, poistive, negative, or fractional. The kinetic equation of nth order reaction is k xx t = (1)/((n-1))[(1)/((a-x)^(n-1)) - (1)/(a^(n-1))] …(i) Half life of nth order reaction depends on the initial concentration according to the following relation: t_(1//2) prop (1)/(a^(n-1)) ...(ii) The unit of the rate constant varies with the order but general relation for the unit of nth order reaction is Units of k = [(1)/(Conc)]^(n-1) xx "Time"^(-1) ...(iii) The differential rate law for nth order reaction may be given as: (dx)/(dt) = k[A]^(n) ...(iv) where A denotes the reactant. In a chemical reaction A rarr B , it is found that the rate of the reaction doubles when the concentration of A is increased four times. The order of the reaction with respect to A is:

Write chemical equation and the final product for the Reaction between one mole of methane and one mole of chlorine

Give chemical equation for the reaction of one mole of ethene with one mole of chlorine gas.

(a) Illustrate the following name reactions giving a chemical equations in each case : (i) Clemmensen reaction (ii) Cannizzaro's reaction (b) Describe how the following conversions can be brought about : (i) Cyclohexanol to cyclohexan 1 - one (ii) Ethylbenzene to benzoic acid (iii) Bromobenzene to benzoic acid

When enthalpy and entropy change for a chemical reaction are -2.5 xx10^(3) cals and 7.4 cals K^(-1) respectively. Predict that reaction at 298 K is

Statement-1: Let a,b,c be non zero real numbers and f(x)=ax^2+bx+c satisfying int_0^1 (1+cos^8x)f(x)dx=int_0^2(1+cos^8x)f(x)dx then the equation f(x)=0 has at least one root in (0,2) .Statement-2: If int_a^b g(x)dx vanishes and g(x) is continuous then the equation g(x)=0 has at least one real root in (a,b) . (A) Both 1 and 2 are true and 2 is the correct explanation of 1 (B) Both 1 and 2 are true and 2 is not correct explanation of 1 (C) 1 is true but 2 is false (D) 1 is false but 2 is true

The equation of the diameter of the circle x^2 + y^2 + 4x + 4y-11=0 , which bisects the chord cut off by the circle on the line 2x-3y-3=0 is 3x+2y+10=0 . Statement 2 : The diameter of a circle is a chord of the circle of maximum length. (A) Both 1 and 2 are true and 2 is the correct explanation of 1 (B) Both 1 and 2 are true and 2 is not a correct explanation of 1 (C) 1 is true but 2 is false (D) 1 is false but 2 is true

Assertion: One mole of atoms consist of 6.022 xx 10^23 atoms. Reason: In ordinary chemical reactions, atoms are and are always present in discrete number.