Which of the following solutions will have the highest concentration of chloride ions?
a)0.10 m nacl
b)0.10 m alcl3
c)0.10 m mgcl2
d)0.05 m cacl2
e)all of these solutions have the same concentration of chloride ions.

B = 0.10 M of AlCl₃

Explanation:

A = 0.10 M NaCl

NaCl → Na⁺ + Cl⁻

sodium chloride dissociate into sodium and chlorine ions. The one mole of NaCl produced on mole of Na⁺ and one mole of Cl⁻, so concentration of chloride ions will be 0.10 M.

B = 0.10 M of AlCl₃

AlCl₃  →    Al³⁺ + 3Cl⁻

AlCl₃ dissociate into aluminium cation and chlorine anion. one mole of AlCl₃ dissociate into one mole of Al³⁺ and three mole of Cl⁻.

so concentration of chloride ion in 0.10 M solution is

0.10 × 3 = 0.3 M

C = 0.10 M MgCl₂

MgCl₂   → Mg²⁺ +  2Cl⁻

MgCl₂ dissociate into one mole of Mg²⁺ and two mole of Cl⁻.

so concentration of chloride ions in 0.10 M solution of MgCl₂ is,

2× 0.10 M = 0.20 M

d = 0.05 M CaCl₂  

CaCl₂  →   Ca²⁺ +  2Cl⁻

CaCl₂ dissociate into one mole of  Ca²⁺ and two mole of Cl⁻, So concentration of chloride ions in 0.05 M CaCl₂ is

2× 0.05 = 0.1 M

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be