CHEMISTRY TEXTBOOK

concentration of A that remains unreacted at time t would be (a - x) mol/dm^3 Substitution of [A] 0 and [A]t = (a - x) k = 2.303 ...

ii. From Eq. (6.7) the integrated rate law is k = 2.303t log 10 [A] 0 [A]t On rearrangement, the equation becomes kt 2.303 = log ...

Problem 6.10 : Following data were obtained during the first order decomposition of SO 2 Cl 2 at the constant volume. SO 2 Cl 2 ...

Half life of zero order reactions : The rate constant of zero order reaction is given by eqn (6.15) k = [A] 0 - [A]t t Using the ...

6.6 Collision theory of bimolecular reactions 6.6.1 Collision between reactant molecules Chemical reactions occur as a result of ...

Do you know? For a gaseous reaction at 298 K, Ea = 75 kJ/mol. The fraction of successful collisions is given by f = e-Ea/RT = e- ...

Fig. 6.9 : Comparison of fraction of molecules activated at T 1 and T 2 Hence, log 10 k 2 k 1 = Ea 2.303 R 1 T 1 1 ( T 2 ( = ...

A k = antilog 20.89 = 7.78 × 10^20 and k = A 7.78 × 10^20 = 1.6 × 10^13 s-1 7.78 × 10^20 = 2.055 × 10-8 s-1 6.8 Effect of a cata ...

Choose the most correct option. i. The rate law for the reaction aA + bB P is rate = k[A] [B]. The rate of reaction doubles if ...

a. increase of temperature b. increase of concentration of NO c. increase of concentration of Cl 2 d. increase of concentrations ...

x. Derive the integrated rate law for first order reaction. xi. How will you represent first order reactions graphically. xii. D ...

7.1 Introduction : You have learnt in Std. XI that in the p-block elements the differentiating electron (the last filling electr ...

7.3 Electronic configuration of elements of group 16, 17 and 18: : The general electronic configuration of the group 16 elements ...

Problem 7.1 : Elements of group 16 generally show lower values of first ionisation enthalpy compared to the elements of correspo ...

Problem 7.2 : The values of first ionisation enthalpy of S and Cl are 1000 and 1256 kJ mol-1, respectively. Explain the observed ...

Problem 7.6 : Noble gases have very low melting and boiling points. Why? Solution : Noble gases are monoatomic, the only type of ...

iv. It forms only one oxoacid (HOF) while other halogens form a number of oxoacids. v. Hydrogen fluoride is a liquid (b.p. 293K) ...

The hydrides of group 16 elements are weakly acidic. The acidic character of the hydrides increases, while thermal stability dec ...

Chlorine oxides, Cl 2 O, ClO 2 , Cl 2 O 6 and Cl 2 O 7 are highly reactive oxidising agents and tend to explode. ClO 2 is used a ...

Tellurium exists in two allotropic forms (i) crystalline and (ii) amorphous. Polonium reveals two allotropic forms α and β (bot ...