For ideal salt solutions, the freezing point depression is expressed as ∆T = iK , where is the number of ions in the salt. For example, NaCl has i = 2. Calculate how much NaCl (in %w/w) is required to lower the freezing point of water to −9.00 °C. (this is used in ice cream making) Kf = 1. 86 deg kg mol^−1 a. Calculate the molality needed for ∆T = 9. 00 °C. b. Convert this molality into %(w/w) using MMNaCl = 58. 44 g/mol

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.