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  • A 0.0020 m aqueous solution of an ionic compound Co(NH3)5 (NO2)Cl freezes at - 0.00732 °C. Number

A 0.0020 m aqueous solution of an ionic compound Co(NH3)5 (NO2)Cl freezes at - 0.00732 °C. Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be (kf = - 1.86°C/m)

Option: 1

3


Option: 2

4


Option: 3

1


Option: 4

2


Answers (1)

best_answer

\text { Applying, }\mathrm{ \Delta T_{f }=i \times K_{f} \times m}

\mathrm{0.00732=i \times 1.86 \times 0.002}

\mathrm{\Rightarrow i=\frac{0.00732}{1.86 \times 0.002}=1.96 \approx 2}

Option 4 is correct.

Posted by

Sanket Gandhi

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