Question

1.49 gm of a metal chloride gives 2.87gm of silver chloride .calculate the equivalent weight of metal

Answer 1

Explanation:

Final Answer : Equivalent Mass of Metal : 107.92g

Steps and Understanding :

1) Let the metal be M such that

M + 1/2 Cl2 ------> MCl

as shown in pic.

Mass of M = 0.456g

Mass of MCl = 0.606g

2) Let the Molecular mass of Metal M be (x) .

Now, By reaction

No. of moles of M = No. of moles of MCl

\begin{gathered} = > \frac{0.456}{x} = \frac{0.606}{x + 35.5} \\ = > \frac{x + 35.5}{x} = \frac{0.606}{0.456} \\ = > x = 35.5 \times \frac{0.456}{0.150} \\ = > x = 107.92 \: g\end{gathered}

=>

x

0.456

=

x+35.5

0.606

=>

x

x+35.5

=

0.456

0.606

=>x=35.5×

0.150

0.456

=>x=107.92g

3) No. of electrons loses by M in reaction is 1 .

So, Equivalent mass of M is

107.92 / 1

= 107.92 g