Correct Answer: Option C

Explanation

Solubility = Amount of solute dissolved in 1dm\(^3\) of solvent divided by the volume of solvent

Solubility = \(\frac{mass}{molar mass}\) x 1 dm\(^3\)

Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol

                  Solubility =  \(\frac{127}{58.5}\) x 1 dm\(^3\)

                                 = 2.17

                                 = 2.2 moldm\(^{-3}\)

There is an explanation video available below.

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