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TS EAMCET Medical 2018 May 2 Shift 2 Paper with Answer key

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Question : 144

Total: 160

A complex represented by CoCl3 . xNH3 was dissolved in 1.0 kg water to make 0.1 m solution. When this was mixed with stoichiometrically required amount of solid AgNO3. 28.66 g of AgCl was obtained. Assume 100% ionization of complex occurred and thecoordination number of Co (III) is six. Kf of water is 1.86 K kg mol−1. What is the value of Δ Tf of the solution upon adding the AgNO3? (Molecular weight of AgCl is 143.3 g mol−1)

0.558 °C
0.186 °C
0.372 °C
0 °C

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