# Chapter 16, Problem 16.42QP

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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
Interpretation Introduction

Interpretation:

The [H+] and pH of the rain drop in which the carbonic acid is the only acid with a concentration of 1.8×105M has to be determined

Concept Information:

Strong acids:

In strong acids, the ionization of acid is complete.  This implies that the concentration of the hydrogen ion or hydronium ion will be equal to the initial concentration of the acid at equilibrium.

For example:

Consider ionization of HCl (a strong acid)

0.10-M HCl solution contains 0.10 M hydronium ions [H3O+] in it, because all the HCl molecules ionizes.

At equilibrium (after the completion of ionization), the concentration of [HCl] will be zero since no HCl molecules remains after ionization.

The concentration after ionization will be as follows,

[HCl] = 0M

[H3O+] = 0.10 M

[Cl-] =0.1 M

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[H3O+]

To Determine: The [H+] and pH of the rain drop in which the carbonic acid is the only acid with a concentration of 1.8×105M

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