GENERAL,ORGANIC+BIOCHEM (LOOSELEAF)
GENERAL,ORGANIC+BIOCHEM (LOOSELEAF)
10th Edition
ISBN: 9781264035090
Author: Denniston
Publisher: MCG
Question
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Chapter 6, Problem 6.53QP

(a)

Interpretation Introduction

Interpretation:

Number of grams of solute needed to prepare 250mLof0.100MNaCl solution has to be calculated.

Concept Introduction:

Molarity (M) can be calculated using following equation,

    M=molsolute(n)Lsolution(VL)

And number of mol can be calculated using given mass of the solute and molecular mass of the solute as follows,

    numberofmol,n=massofsolute(w)molecularmass(M)

On combining the above two equations another expression for molarity is obtained as below.

    Molarity=massofsolutemolecularmass×volume(L)

(a)

Expert Solution
Check Mark

Answer to Problem 6.53QP

Number of grams of solute needed to prepare 250mLof0.100MNaCl solution is 1.461g.

Explanation of Solution

Molecular mass of sodium chloride is 58.44g.

Number of grams of solute needed to prepare 250mL(0.250L)of0.100MNaCl solution can be calculated as follows,

    Molarity=massofsolutemolecularmass×volume(L)massofsolute=(Molarity)×(molecularmass)×(volume(L))=(0.100M)×(58.44g/mol)×(0.250L)=1.461g.

Amount solute required is 1.461g.

(b)

Interpretation Introduction

Interpretation:

Number of grams of solute needed to prepare 250mLof0.200M glucose solution has to be calculated.

Concept Introduction:

Refer to part (a).

(b)

Expert Solution
Check Mark

Answer to Problem 6.53QP

Number of grams of solute needed to prepare 250mLof0.200M glucose solution is 9.0078g.

Explanation of Solution

Molecular mass of glucose is 180.156g/mol.

Number of grams of solute needed to prepare 250mLof0.200M glucose solution can be calculated as follows,

    Molarity=massofsolutemolecularmass×volume(L)massofsolute=(Molarity)×(molecularmass)×(volume(L))=(0.200M)×(180.156g/mol)×(0.250L)=9.0078g.

Amount solute required is 9.0078g.

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Chapter 6 Solutions

GENERAL,ORGANIC+BIOCHEM (LOOSELEAF)

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