Question

A solution of fecl3 is m/30 it's molarity for cl- ion will be

Answer 1

Molarity is the number of moles of solute present in one liter of solution and its unit is mol /L. The solute is ferric chloride and M /30 is the given molarity can be shown as:

Molarity of FeCl_3 is M /30

Number of moles, n = 1 /30 mole

Number of moles of chloride ion in ferric chloride is usually three times the number of moles of ferric chloride as 3 chloride ions are present in compound.

As, three chloride ions are present in $FeCl_3$ which indicates the number of mole of Chloride is:

$n_C_l = 3 /30 = 1 /10 mol$

Hence, molarity of chloride ion in $FeCl_3$ is M /10

Answer 2

Answer: M/10

Explanation:

Molarity of cl-

M/30*3

=M/10