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 mL⁻¹, then what shall be the molarity of the solution?

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Solution

Molar mass of ethylene glycol= 2 × 12 + 6 × 1 + 2 ×16

= 62 gmol⁻¹

Number of moles of ethylene glycol

= 3.59 mol

Therefore, molality of the solution

= 17.95 m

Total mass of the solution = (222.6 + 200) g

= 422.6 g

Given,

Density of the solution = 1.072 g mL⁻¹

Volume of the solution

= 394.22 mL

= 0.3942 × 10⁻³ L

Molarity of the solution

= 9.11 M

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QUESTION 2.8

An antifreeze solution is prepared from 222.6 g of ethylene glycol $(C_{2} H_{6} O_{2})$ and 200 g of water. Calculate the molality of the solution. If the density of the solution is $1.072 g m L^{- 1}$ , then what shall be the molarity of the solution?

Q. An antifreeze mixture consists of

40

% ethylene glycol

(C_{2} H_{6} O_{2})

by weight in aqueous solution. If the density of this solution is

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g/mL, what is the molar concentration?

Q. The coolant usually contains a solution of antifreeze prepared by mixing equal volumes of ethylene glycol

C_{2} H_{4} (O H)_{2}

and water. The density of ethylene glycol is

1.113 g c m^{- 3}

. Thus, the freezing point of the mixture is:

(K_{f} o f H_{2} O = 1.86 K k g m o l^{- 1})

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 mL⁻¹, then what shall be the molarity of the solution?

Calculate the mole fraction of ethylene glycol and water in a solution containing 20% of C₂H₆O₂by mass.

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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 mL−1, then what shall be the molarity of the solution?

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 mL⁻¹, then what shall be the molarity of the solution?