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The solubility of sodium chloride in wat...

The solubility of sodium chloride in water is `6.150 mol L^(-1)` at 20°C. 80g of sodium chloride is dissolved in `100 cm^(3)` of water at 20°C. How much sodium chloride is left undissolved ? After equilibrium is reached, an additional 50 cm of water is added to the system at the same temperature. Find the amount of NaCl present in the solution and in the undissolved state.

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