Coagulating value of electrolytes $\mathrm{AlCl}_{3}$ and NaCl for $\mathrm{As}_{2} \mathrm{~S}_{3}$ are 0.09 and 50.04 respectively. The coagulating power of $\mathrm{AlCl}_{3}$ is $x$ times the coagulating power of NaCl . The value of $x$ is \_\_\_\_ :

JEE Main · 2023 · 08 Apr 2023 · Shift 2 · Surface Chemistry

Coagulating value of electrolytes

AlCl_{3}

and NaCl for

As_{2} S_{3}

are 0.09 and 50.04 respectively. The coagulating power of

AlCl_{3}

x

times the coagulating power of NaCl . The value of

x

is
____ :

Answer: 556

Solution

The coagulating power of an electrolyte is inversely proportional to its coagulating value. The ratio of the coagulating powers is therefore the inverse of the ratio of the coagulating values.

\frac{C.P. of AlCl _{3}}{C.P. of NaCl} = \frac{C.V. of NaCl}{C.V. of AlCl _{3}} = \frac{50.04}{0.09} = 556.

The coagulating power of

AlCl_{3}

is thus 556 times that of NaCl, so

x = 556

JEE Main · 2023 · 08 Apr 2023 · Shift 2 · Integer answer

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