`C Cl_4 ` does not act as a Lewis acid while `SiCl_4` and `SnCl_4` act as lewis acids why?

C Cl_4 does not under go hydrolysis why?

What are Lewis acid and base Give example.

Give reasons for the following: NH_3 acts as a Lewis base.

Complete the following chemical reaction equations. P_4 + NaOH+H_2O rarr , I^-(aq)+H_2O(l)+O_3(g) rarr . H_2S acts only as reducing agent while SO_2 acts as an oxidising as well as reducing agent. Why?

Explain the following giving reason why HNO_3 can act as oxidising agent only while HNO_2 can act as both oxidising and reducing agent .

Fill in the blanks at (A), (B), (C), (D), (E) and (F), and complete the C_4 pathway/Hatch Slack pathway. Atm CO2 enters (A) CO_2 is accepted by (B) and forms four carbon acid compound (C) C_4 acid enters into (D) and splits into CO_2 and (E). CO_2 enters Calvin cycle and 3C acid (F) is formed.

The conductivity of 0.001M acetic acid is 4X10^(-2)S//m . Calculate the dissociation constant of acetic acid if lambda_m^@ for acetic acid is 390Scm^2mol^(-1) .

Who discovered the C_4 cycle?