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3 years ago

In which of the following is the solution concentration expressed in terms of molarity?

2 answers:

8 0

Answer:
D. 10 mol of solute/ 1L of solution

Explanation:
Molarity is used to express the concentration of the solution. It is expressed as the number of moles of solute per liter of solution

Molarity = moles of solute / liters of solution
This means that molarity has the units moles/liter

The only option satisfying this is the last one.

Hope this helps :)

kifflom [539]3 years ago

6 0

The solution concentration that is expressed in terms of molarity is as follows:

$\boxed{{\text{D}}{\text{. 10 mol of solute/1 L of solution}}}$ .

Further Explanation:

Concentration describes relationship between different components of solution. In order to indicate concentration of different types of solutions, various concentration terms are used. Some of these are mentioned below.

1. Molarity (M)

2. Mole fraction (X)

3. Molality (m)

4. Parts per million (ppm)

5. Mass percent ((w/w) %)

6. Volume percent ((v/v) %)

7. Parts per billion (ppb)

A. 10 g of solute/1000 g of solution

Mass percent is defined as the ratio of mass of solute to that of solution. Since above expression is the ratio of mass of solute to mass of solution, it is expressed as mass percent and not molarity.

B.10 g of solute/1000 mL of solution

Density is defined as mass per unit volume. Since above expression is the ratio of mass to volume, it is expressed as density and not molarity.

C. 10 mL of solute/1 L of solution

Volume percent is defined as the volume of solute divided by the total volume of solution. Since above expression is the ratio of volume of solute to volume of solution, it is expressed as volume percent and not molarity.

D. 10 mol of solute/1 L of solution

Molarity is defined as moles of solute that can be dissolved in one liter of solution. Since above expression is the ratio of amount of solute to the volume of solution in liters, it is expressed as molarity of solution.

Hence, option D represents the solution in terms of molarity.

Learn more:

Calculation of volume of gas: brainly.com/question/3636135
Determine how many moles of water produce: brainly.com/question/1405182

Answer details:

Grade:Senior School

Subject: Chemistry

Chapter: Concentration terms

Keywords: molarity, volume of solution, amount of solute, mass percent, volume percent, density, concentration terms.

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4 years ago

In the decomposition reaction, 1 mole of water (mw = 18.015 g/mol) was produced for every mole of cuo (mw = 79.545 g/mol) produc

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Reactives -> Products

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1 year ago

A chemist adds 485 mL of a 0.0025 mol/L calcium sulfate solution to a reaction flask. Calculate the mass in grams of calcium sul

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3 years ago

Delicious77 [7]

Answer:

C) How much energy was added to the substance to increase molecule motion?

Explanation:

The most relevant question to ask regarding this change must take into account the physical knowledge about matter.

When matter changes from liquid state to gaseous state, a physical change called evaporation, the particles (molecules or atoms) of the pure substance will separate from each other, take up more space and move faster.

Condensation is the opposite to evaporation, thus the option A) is not the most relevant question.

The charge of the particles does not change; so the option B) is not relevant at all.

The particles should gain energy from the surroundings to increase their motion (kinetic energy) when they pass from liquid state, where they move slower, to gas state, where they move faster. Hence, the option C), How much energy was added to the substance to increase molecule motion? , is totally relevant.

Since this is an increase in the kinetic energy of the molecules, the option D) is not relevant.

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3 years ago