Question

The molality of a solution of ethyl alcohol in water is 1.55 m. How many grams of ethyl alcohol are dissolved in 2 kg of water?

Answer 1

Hi there,

Given

● Ethyl alcohol formula C2H6O

● 《Mwt》Molar mass is 46 gm

● 《m 》Molality = 1.55

● 《Kg》 Mass of solvent = 2Kg

☆ Find the number of moles

☆ m = n ÷ Kg => n = m × Kg

☆ n = 2 × 1.55 = 3.1 mol

☆ Mass of alcohol = n × Mwt

☆ ms = 3.1 × 46 = 142.5 gm

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Answer 2

Answer:

Here is your answer..

Explanation:

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