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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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42. a. Fill in the following table as if it is a well plate and you are mixing two aqueous compounds at a time to see if a precipitate forms. If a precipitate is expected to form, indicate that by writing the correct formula for the precipitate in the corresponding box in the table. If no precipitate is expected to form, write “NO” in the box.

    CaCI2 Pb(NO3)2 (NH4)3PO4
    Na2CO3
    AgNO3
    K2SO4

b. How do you prepare 300.0 mL of a 0.250 M CaCl2 solution using an available 2(X) M solution? Support your answer with calculations, but also make sure you describe how to prepare the solution.

Interpretation Introduction

(a)

Interpretation:

The given table for the precipitation reactions is to be filled.

Concept Introduction:

Precipitation reaction is a type of reaction in which two or more ionic compounds react with each other in aqueous medium to form an insoluble compound that is called the precipitate. A general precipitation reaction is represented as:

ABaq+CDaqADs+CBaq.

Explanation

The balanced chemical reaction between CaCl2 and Na2CO3 is represented as,

Na2CO3aq+CaCl2aqCaCO3s+2NaClaq

The balanced chemical reaction between CaCl2 and AgNO3 is represented as,

2AgNO3aq+CaCl2aq2AgCls+CaNO32aq

The balanced chemical reaction between CaCl2 and K2SO4 is represented as,

K2SO4aq+CaCl2aqCaSO4s+2KClaq

The balanced chemical reaction between PbNO32 and Na2CO3 is represented as,

PbNO32aq+Na2CO3aqPbCO3s+2NaNO3aq

The balanced chemical reaction between PbNO32 and K2SO4 is represented as,

PbNO32aq+K2SO4aqPbSO4

Interpretation Introduction

(b)

Interpretation:

The volume of 2.00MCaCl2 required to prepare the 300.0mL of a 0.250MCaCl2 solution is to be calculated. The preparation method of 0.250MCaCl2 is to be described.

Concept Introduction:

The molarity of a solution is defined as the number of mole 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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