the ph scale

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Drain Cleaner Bleach Ammonia Soap Baking Soda Seawater Pure Water Urine (average) Black Cofee Tomato Juice Battery Acid Stomach Acid Soda C BY NC ND ACIDS, ALKALIS, AND THE pH SCALE © COMPOUND INTEREST 2015 - WWW.COMPOUNDCHEM.COM | @COMPOUNDCHEM Shared under a Creative Commons Attribution- NonCommercial-NoDerivatives licence. 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 NEUTRAL A C I D I C A L K A L I N E H + CONCENTRATION (in moles per litre) 1 × 10 -1 4 1 × 10 -1 3 1 × 10 -1 2 1 × 10 -1 1 1 × 10 -10 1 × 10 -9 1 × 10 -8 1 × 10 -7 1 × 10 -6 1 × 10 -5 1 × 10 -4 1 0.1 0.01 0.001 The pH scale is a way of gauging the acidity or alkalinity of a solution. It is calculated using: pH = -log 10 [H + ]. Adding an acid to water increases the H + (H 3 O + ) concentration, and decreases the OH - concentration. An alkali does the opposite. pH 1 0.1 0.01 0.001 1 × 10 -4 1 × 10 -5 1 × 10 -6 1 × 10 -7 1 × 10 -8 1 × 10 -9 1 × 10 -10 1 × 10 -1 4 1 × 10 -1 3 1 × 10 -1 2 1 × 10 -11 OH - CONCENTRATION (in moles per litre) EVERYDAY EXAMPLE Lemon Juice Antacid Tablets R e d O r a n g e Y e l l o w T u r q u o i s e B l u e P u r p l e Green

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Quimica analitica

TRANSCRIPT

Drain Cleaner

Bleach

Ammonia

Soap

Baking Soda

Seawater

Pure Water

Urine (average)

Black Coffee

Tomato Juice

Battery Acid

Stomach Acid

Soda

CBY NC ND

ACIDS, ALKALIS, AND THE pH SCALE

COMPOUND INTEREST 2015 - WWW.COMPOUNDCHEM.COM | @COMPOUNDCHEMShared under a Creative Commons Attribution-NonCommercial-NoDerivatives licence.

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

NEUTRAL

AC

ID

IC

AL

KA

LIN

EH+ CONCENTRATION

(in moles per litre)

1 10-14

1 10-13

1 10-12

1 10-11

1 10-10

1 10-9

1 10-8

1 10-7

1 10-6

1 10-5

1 10-4

1

0.1

0.01

0.001

The pH scale is a way of gauging the acidity or alkalinity of a solution. It is calculated using: pH = -log10[H+]. Adding an

acid to water increases the H+ (H3O+) concentration, and decreases the OH- concentration. An alkali does the opposite.

pH

1

0.1

0.01

0.001

1 10-4

1 10-5

1 10-6

1 10-7

1 10-8

1 10-9

1 10-10

1 10-14

1 10-13

1 10-12

1 10-11

OH- CONCENTRATION(in moles per litre) EVERYDAY EXAMPLE

Lemon Juice

Antacid Tablets

Red

Ora

nge

Yello

wTu

rquo

ise

Blue

Purp

le

Green

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