Chemistry

Hybridisation = sp³d²

Shape – square planar

Order of limiting molar conductivity

OH^- > SO₄^2- > Cl^- > CH₃COO^-

Higher the acidic strength, lower will be the value of pKa.

Therefore, Correct order of pKa is

CH₃COOH > C₆H₅COOH > HCOOH > O₂NCH₂COOH

XeF₂ + PF₅ ¾-> [XeF]⁺ [PF₆]^–

The following are the real-world applications of electrochemistry - military applications such as thermal batteries, digital watches, hearing aids, digital cameras, electrical appliances such as cellphones, and torches.

Correct order of covalent character is

NaI > NaBr > NaCl > NaF

It depends on students. Though it is not a tough chapter to study but for students who have misconceptions and those who struggle with visualization can find it challenging. 

There are two types of electrochemical cells - Electrolytic and Galvanic or Voltaic cells. The electrolytic cells need an external source such as AC power source or DC battery and it involve non-spontaneous reactions. The galvanic cells gets its energy from redox reactions which is spontaneous.

[Co (NH₃)₆]³⁺, NH3 becomes strong ligand due to +3 oxidation state of cobalt ion. Hence electronic configuration of

Redox reactions is the basic principle of the electrochemistry. The redox reactions is the process where electrons are transferred between substances. In this process chemical energy gets converted into electrical energy and vice versa.