Concept explainers
What quantity of ethylene glycol, HOCH2CH2OH, must be added to 125 g of water to raise the boiling point by 1.0 °C? Express the answer in grams.
Interpretation: The quantity of ethylene glycol added in the water to raise the boiling point by
Concept introduction:
Boiling point elevation: The expression that depicts the relationship between boiling point of the solution varies with the solute concentration is shown as follows,
Here,
Answer to Problem 2CYU
The quantity of ethylene glycol added in water is
Explanation of Solution
Given:
From the above equation, mass of the solute can be calculated.
Number of moles of glycol can be calculated as given below:
From the general equation,
The quantity of ethylene glycol required to be added in water was identified.
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