GENERAL,ORGANIC,+BIOCHEMISTRY
GENERAL,ORGANIC,+BIOCHEMISTRY
10th Edition
ISBN: 9781260148954
Author: Denniston
Publisher: RENT MCG
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Chapter 6, Problem 1MCP

(a)

Interpretation Introduction

Interpretation:

The reason why water is a good solvent for magnesium chloride has to be explained.

(a)

Expert Solution
Check Mark

Explanation of Solution

Magnesium chloride is an ionic compound containing positively charged magnesium ions and negatively charged chloride ions bonded through electro static interaction.  Water is also a polar compound due to the difference in electro negativities of oxygen and hydrogen.  So according to the rule “like dissolves like” polar magnesium chloride dissolves in polar water.

(b)

Interpretation Introduction

Interpretation:

The %(m/V) of 1L solution containing 5gMgCl2 has to be calculated.

Concept Introduction:

The %(m/V) can be calculated as follows,

    %(m/V)=massofsolutevolumeofsolution×100%

(b)

Expert Solution
Check Mark

Answer to Problem 1MCP

The %(m/V) of 1L solution containing 5gMgCl2 is 0.5%.

Explanation of Solution

The %(m/V) of 1L(1000mL) solution containing 5gMgCl2 can be calculated as follows,

    %(m/V)=massofsolutevolumeofsolution×100%=5g1000mL×100%=0.5%.

Percent mass/volume is 0.5%.

(c)

Interpretation Introduction

The %(m/m) of 1L solution containing 5gMgCl2 has to be calculated.

Concept Introduction:

The %(m/m) can be calculated as follows,

    %(m/m)=massofsolutemassofsolution×100%

(c)

Expert Solution
Check Mark

Answer to Problem 1MCP

The %(m/m) of 1L solution containing 5gMgCl2 is 0.47%.

Explanation of Solution

The mass of solution can be calculated using the given volume of solution (1000mL) and given density (1.06g/mL) as below.

    mass=volume×density=1000mL×1.06g/mL=1060g

The %(m/m) of 1060g solution containing 5gMgCl2 can be calculated as follows,

    %(m/V)=massofsolutevolumeofsolution×100%=5g1060mL×100%=0.47%.

Percent mass/mass is 0.47%.

(d)

Interpretation Introduction

Interpretation:

Number of moles of magnesium chloride in the solution has to be calculated.

Concept introduction:

Number of moles can be calculated as follows,

    numberofmoles=givenmassmolarmass

(d)

Expert Solution
Check Mark

Answer to Problem 1MCP

Number of moles of 5gMgCl2 is 0.05mole.

Explanation of Solution

Molar mass of MgCl2 is 95.211g/mol.

Number of moles of 5gMgCl2 can be calculated as follows,

    numberofmoles=givenmassmolarmass=5g95.211g/mole=0.05mole.

Number of mole is 0.05mole.

(e)

Interpretation Introduction

Interpretation:

The molarity of 1L solution containing 5gMgCl2 has to be calculated.

Concept Introduction:

Molarity can be calculated using following equation.

    Molarity=molesofsoluteVolumeofsolution(L)

(e)

Expert Solution
Check Mark

Answer to Problem 1MCP

The molarity of 1L solution containing 5gMgCl2 is 0.05M.

Explanation of Solution

Number of moles of 5gMgCl2 can be calculated as follows,

    numberofmoles=givenmassmolarmass=5g95.211g/mole=0.05mole.

The molarity of 1L solution containing 5gMgCl2 can be calculated as follows,

    Molarity=molesofsoluteVolumeofsolution(L)=0.05mole1L=0.05M.

Molarity is 0.05M.

(f)

Interpretation Introduction

Interpretation:

The given magnesium chloride solution is an electrolyte or not has to be predicted.

(f)

Expert Solution
Check Mark

Explanation of Solution

The given magnesium chloride solution is an electrolyte, because when dissolved in water it dissociates to form positive charged magnesium ion and negatively charged chloride ions.

(g)

Interpretation Introduction

Interpretation:

The boiling point of the given magnesium chloride solution has to be compared with the boiling point of water.

(g)

Expert Solution
Check Mark

Explanation of Solution

The boiling point of the given magnesium chloride solution will be greater than that of pure water, because boiling point is the temperature at which vapor pressure becomes equal to atmospheric pressure.  If a non volatile solute (magnesium chloride) is added then the vapor pressure get lowered.  So, more temperature has to be provided for vaporizing.  Hence the boiling point increases.

(h)

Interpretation Introduction

Interpretation:

The melting point of the given magnesium chloride solution has to be compared with the melting point of water.

Concept Introduction:

(h)

Expert Solution
Check Mark

Explanation of Solution

The melting point of the given magnesium chloride solution is lower than that of pure water, because at freezing point solid phase of the solvent will be in equilibrium with liquid phase.  When solute molecule (magnesium chloride) is added, it will interfere with the rate at which the liquid molecules associate to form solid state, hence lower the freezing point of the solution.

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Chapter 6 Solutions

GENERAL,ORGANIC,+BIOCHEMISTRY

Ch. 6.3 - Prob. 6.5PPCh. 6.3 - Prob. 6.6PPCh. 6.3 - Prob. 6.7PPCh. 6.3 - Prob. 6.7QCh. 6.3 - Prob. 6.8QCh. 6.3 - Prob. 6.8PPCh. 6.3 - Prob. 6.9PPCh. 6.4 - Prob. 6.9QCh. 6.4 - Comparing pure water and a 0.10 m glucose...Ch. 6.4 - Prob. 6.10PPCh. 6.4 - Prob. 6.11PPCh. 6.4 - Prob. 6.12PPCh. 6.4 - Prob. 6.13PPCh. 6.4 - Prob. 6.11QCh. 6.4 - Prob. 6.12QCh. 6.5 - Prob. 6.14PPCh. 6.5 - Prob. 6.15PPCh. 6.5 - Prob. 6.16PPCh. 6.5 - Prob. 6.13QCh. 6.5 - Prob. 6.14QCh. 6 - Prob. 6.15QPCh. 6 - Prob. 6.16QPCh. 6 - Which of the following solute(s) would form an...Ch. 6 - Prob. 6.18QPCh. 6 - Prob. 6.19QPCh. 6 - Prob. 6.20QPCh. 6 - Prob. 6.21QPCh. 6 - Prob. 6.22QPCh. 6 - Prob. 6.23QPCh. 6 - Prob. 6.24QPCh. 6 - Prob. 6.25QPCh. 6 - Prob. 6.26QPCh. 6 - Prob. 6.27QPCh. 6 - Prob. 6.28QPCh. 6 - The Henry’s law constant, k, for O2 in aqueous...Ch. 6 - The Henry’s law constant, k, for N2 in aqueous...Ch. 6 - Calculate the composition of each of the following...Ch. 6 - Calculate the composition of each of the following...Ch. 6 - Calculate the composition of each of the following...Ch. 6 - Calculate the composition of each of the following...Ch. 6 - Prob. 6.35QPCh. 6 - Calculate the composition of each of the following...Ch. 6 - Prob. 6.37QPCh. 6 - Prob. 6.38QPCh. 6 - Prob. 6.39QPCh. 6 - Prob. 6.40QPCh. 6 - Prob. 6.41QPCh. 6 - Prob. 6.42QPCh. 6 - Prob. 6.43QPCh. 6 - Prob. 6.44QPCh. 6 - Which solution is more concentrated: a 0.04% (m/m)...Ch. 6 - Which solution is more concentrated: a 20 ppt...Ch. 6 - Prob. 6.47QPCh. 6 - Prob. 6.48QPCh. 6 - Prob. 6.49QPCh. 6 - Prob. 6.50QPCh. 6 - Why is it often necessary to dilute solutions in...Ch. 6 - Write the dilution expression and define each...Ch. 6 - Prob. 6.53QPCh. 6 - Prob. 6.54QPCh. 6 - Prob. 6.55QPCh. 6 - Prob. 6.56QPCh. 6 - Calculate the volume of a 0.500 M sucrose solution...Ch. 6 - Calculate the volume of a 1.00 × 10−2 M KOH...Ch. 6 - It is desired to prepare 0.500 L of a 0.100 M...Ch. 6 - A 50.0-mL sample of a 0.250 M sucrose solution was...Ch. 6 - A 50.0-mL portion of a stock solution was diluted...Ch. 6 - Prob. 6.62QPCh. 6 - Prob. 6.63QPCh. 6 - Prob. 6.64QPCh. 6 - Prob. 6.65QPCh. 6 - Prob. 6.66QPCh. 6 - Prob. 6.67QPCh. 6 - Prob. 6.68QPCh. 6 - Prob. 6.69QPCh. 6 - Prob. 6.70QPCh. 6 - Prob. 6.71QPCh. 6 - Prob. 6.72QPCh. 6 - Prob. 6.73QPCh. 6 - Prob. 6.74QPCh. 6 - Prob. 6.75QPCh. 6 - Prob. 6.76QPCh. 6 - Prob. 6.77QPCh. 6 - Prob. 6.78QPCh. 6 - Answer Questions 6.79–6.82 based on the following...Ch. 6 - Answer Questions 6.79–6.82 based on the following...Ch. 6 - Answer Questions 6.79–6.82 based on the following...Ch. 6 - Answer Questions 6.79–6.82 based on the following...Ch. 6 - Prob. 6.83QPCh. 6 - Prob. 6.84QPCh. 6 - Prob. 6.85QPCh. 6 - Prob. 6.86QPCh. 6 - Prob. 6.87QPCh. 6 - Prob. 6.88QPCh. 6 - Prob. 6.89QPCh. 6 - Prob. 6.90QPCh. 6 - Prob. 6.91QPCh. 6 - Prob. 6.92QPCh. 6 - Prob. 6.93QPCh. 6 - Prob. 6.94QPCh. 6 - Prob. 6.95QPCh. 6 - Name the two most important cations in biological...Ch. 6 - Prob. 6.97QPCh. 6 - Explain why a dialysis solution must have an...Ch. 6 - Prob. 6.99QPCh. 6 - Prob. 6.100QPCh. 6 - Prob. 6.101QPCh. 6 - Prob. 6.102QPCh. 6 - Prob. 6.103QPCh. 6 - What type of solute dissolves readily in benzene...Ch. 6 - Prob. 6.105QPCh. 6 - Prob. 6.106QPCh. 6 - Prob. 6.107QPCh. 6 - Prob. 6.108QPCh. 6 - Prob. 6.109QPCh. 6 - Prob. 6.110QPCh. 6 - Prob. 6.111QPCh. 6 - Prob. 6.112QPCh. 6 - Prob. 6.113QPCh. 6 - Prob. 6.114QPCh. 6 - Prob. 1MCPCh. 6 - Prob. 2MCPCh. 6 - Prob. 3MCPCh. 6 - Prob. 4MCPCh. 6 - Prob. 5MCPCh. 6 - Prob. 6MCPCh. 6 - Prob. 7MCPCh. 6 - Prob. 8MCPCh. 6 - Prob. 9MCPCh. 6 - Prob. 10MCP
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY