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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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Calculate the new molarity when 150. mL of water is added to each of the following solutions.

a. 125 mL of 0.200 M HBr

b. 155 mL of 0.250 M Ca(C2HO2)2

c. 0.500 L of 0.250 M HPO4

d. 15 mLof 18.0 M H2SO4

Interpretation Introduction

(a)

Interpretation:

The new molarity of the given solution diluted with 150mL of water is to be calculated.

Concept Introduction:

The molarity of a solution is defined as the number of moles of solute dissolved in one liter of the solution. The formula for molarity is given as:

M=nV

Where,

  • n represents the number of moles of the solute.
  • V represents the volume of the solution.
Explanation

The molarity of the given HBr solution is 0.200M.

The volume of 0.200MHBr solution is 125mL.

The volume of water added in the solution is 150mL.

The total new volume of the solution is given as:

Vf=Vi+Vw

Where,

  • Vi represents the initial volume of the solution.
  • Vw represents the volume of water added in the solution.

Substitute the value of Vi and Vw in the above equation.

Vf=125mL+150mL=275mL

The relation between the initial and final volume of a solution is given as:

MfVf=MiVi

Where,

  • Mf represents the final molarity of the solution
Interpretation Introduction

(b)

Interpretation:

The new molarity of the given solution diluted with 150mL of water is to be calculated.

Concept Introduction:

The molarity of a solution is defined as the number of moles of solute dissolved in one liter of the solution. The formula for molarity is given as:

M=nV

Where,

  • n represents the number of moles of the solute.
  • V represents the volume of the solution.
Interpretation Introduction

(c)

Interpretation:

The new molarity of the given solution diluted with 150mL of water is to be calculated.

Concept Introduction:

The molarity of a solution is defined as the number of moles of solute dissolved in one liter of the solution. The formula for molarity is given as:

M=nV

Where,

  • n represents the number of moles of the solute.
  • V represents the volume of the solution.
Interpretation Introduction

(d)

Interpretation:

The new molarity of the given solution diluted with 150mL of water is to be calculated.

Concept Introduction:

The molarity of a solution is defined as the number of moles of solute dissolved in one liter of the solution. The formula for molarity is given as:

M=nV

Where,

  • n represents the number of moles of the solute.
  • V represents the volume of the solution.

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