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**2.2 Give an example of a solid solution in which the solute is a gas.**

**2.3 Define the following terms:(i) Mole fraction**

**2.3 Define the following terms:(ii) Molality**

**2.3 Define the following terms:(iii) Molarity**

**2.3 Define the following terms:(iv) Mass percentage.**

**2.4 Concentrated nitric acid used in laboratory work is 68% nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of the solution is 1.504 g mLâ€“1?**

**2.5 A solution of glucose in water is labelled as 10% w/w, what would be the molality and mole fraction of each component in the solution? If the density of solution is 1.2 g mLâ€“1, then what shall be the molarity of the solution?**

**2.6 How many mL of 0.1 M HCl are required to react completely with 1 g mixture of Na2CO3 and NaHCO3 containing equimolar amounts of both?**

**2.7 A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution.**

**2.8 An antifreeze solution is prepared from 222.6 g of ethylene glycol (C2H6O2) and 200 g of water. Calculate the molality of the solution. If the density of the solution is 1.072 g mLâ€“1, then what shall be the molarity of the solution?**

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