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Chemistry Part-I

Some Basic Concepts of Chemistry

Calculate the molarity of a solution of ethanol in water in wh

Chemistry Part-I

Class 11

NCERT

Chapter 1: Some Basic Concepts of Chemistry

44 questions

Which one of the following will have largest number of atoms ?

Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is

0.040

[Assume the density of water to be one]

How many significant figures should be present in the answer of the following calculations?
(i)

\frac{0.02856 \times 298.15 \times 0.112}{0.5785}

(ii)

5 \times 5.364

(iii)

0.0125 + 0.7864 + 0.0215

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Chapter 2: Structure of Atom

85 questions

Chapter 3: Classification of Elements and Periodicity in Properties

50 questions

Chapter 4: Chemical Bonding and Molecular Structure

44 questions

Chapter 5: States of Matter

28 questions

Chapter 6: Thermodynamics and Thermochemistry

36 questions

Chapter 7: Equilibrium

101 questions

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Solving time: 3 mins

Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is $0.040$ .

[Assume the density of water to be one]

Views: 6,099 students

Updated on: Nov 7, 2023

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Chemistry Part-I (NCERT)

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Elijah Discussed

Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is

0.040

[Assume the density of water to be one]

12 mins ago

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12 mins ago

Text solutionVerified

The mole fraction of ethanol is equal to the ratio of the number of moles of ethanol to the total number of moles present in the solution.

For dilute solutions, 1 L of water (or 1 L of solution) contains

\frac{1000}{18} = 55.55

moles of water.

Let n be the number of moles of ethanol. The mole fraction of ethanol is 0.040.

Hence,

0.040 = \frac{n}{n + 55.55}

n = 0.040 n + 2.222

n = \frac{2.222}{1 - 0.040} = 2.31

moles.

The molarity of the solution is the ratio of the number of moles of solute present in 1 L of solution.

As 1 L of solution contains 2.31 moles of ethanol, the molarity of a solution is 2.31 M.

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Practice more questions from Chemistry Part-I (NCERT)

Which one of the following will have largest number of atoms ?

Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is

0.040

[Assume the density of water to be one]

How many significant figures should be present in the answer of the following calculations?
(i)

\frac{0.02856 \times 298.15 \times 0.112}{0.5785}

(ii)

5 \times 5.364

(iii)

0.0125 + 0.7864 + 0.0215

View all

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Question Text	Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is $0.040$ . [Assume the density of water to be one]
Updated On	Nov 7, 2023
Topic	Some Basic Concepts of Chemistry
Subject	Chemistry
Class	Class 11
Answer Type	Text solution:1 Video solution: 18
Upvotes	1910
Avg. Video Duration	6 min

Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is $0.040$ .

[Assume the density of water to be one]

Text solutionVerified

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Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is 0.040.[Assume the density of water to be one]

Text solutionVerified

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Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is $0.040$ .

[Assume the density of water to be one]