Question

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 ($K_f$ = – 1.86°C/m)
(a) 3
(b) 4
(c) 1
(d) 2

Answer 1

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(b) 4

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