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CHEMISTRY: ATOMS FIRST VOL 1 W/CON...

14th Edition
Burdge
ISBN: 9781259327933

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FindFindarrow_forward

CHEMISTRY: ATOMS FIRST VOL 1 W/CON...

14th Edition
Burdge
ISBN: 9781259327933

(a)

Interpretation Introduction

Interpretation:

The pD for D2O has to be calculated

For what values of pD will a solution be acidic in D2O has to be explained

A relation between pD and pOD has to be derived.

Concept Information:

Autoionization of water:

The equation of equilibrium for autoionization of water is,

H2OH++OH-

Kw=[H+][OH-]=1×10-14

Relationship between pH and pOH

pOH is similar to pH .  The only difference is that in pOH the concentration of hydroxide ion is used as a scale while in pH , the concentration of hydronium ion is used.

The relationship between the hydronium ion concentration and the hydroxide ion concentration is given by the equation,

pH+pOH=14,at25oC

As pOH and pH are opposite scale, the total of both has to be equal to 14.

pH definition:

The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale.

The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration.

pH=-log[H+]

To calculate: The pD for D2O

(b)

Interpretation Introduction

Interpretation:

The pD for D2O has to be calculated

For what values of pD will a solution be acidic in D2O has to be explained

A relation between pD and pOD has to be derived.

Concept Information:

Autoionization of water:

The equation of equilibrium for autoionization of water is,

H2OH++OH-

Kw=[H+][OH-]=1×10-14

Relationship between pH and pOH

pOH is similar to pH .  The only difference is that in pOH the concentration of hydroxide ion is used as a scale while in pH , the concentration of hydronium ion is used.

The relationship between the hydronium ion concentration and the hydroxide ion concentration is given by the equation,

pH+pOH=14,at25oC

As pOH and pH are opposite scale, the total of both has to be equal to 14.

pH definition:

The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale.

The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration.

pH=-log[H+]

(c)

Interpretation Introduction

Interpretation:

The pD for D2O has to be calculated

For what values of pD will a solution be acidic in D2O has to be explained

A relation between pD and pOD has to be derived.

Concept Information:

Autoionization of water:

The equation of equilibrium for autoionization of water is,

H2OH++OH-

Kw=[H+][OH-]=1×10-14

Relationship between pH and pOH

pOH is similar to pH .  The only difference is that in pOH the concentration of hydroxide ion is used as a scale while in pH , the concentration of hydronium ion is used.

The relationship between the hydronium ion concentration and the hydroxide ion concentration is given by the equation,

pH+pOH=14,at25oC

As pOH and pH are opposite scale, the total of both has to be equal to 14.

pH definition:

The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale.

The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration.

pH=-log[H+]

To Derive: A relation between pD and pOD

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