Download App
Google Android
Apple iOS
Huawei
English
English
Malay
Guest
Login
Register
Home
Quiz
Battle
Practice
Class
Classes List
Timetable
Assignments
Learn
Learning Hub
Quick Notes
Videos
Experiments
Textbooks
Login
Register
Download App
Google Android
Apple iOS
Huawei
EN
MS
Learn
Quick Notes
List
pH Value
pH Value
6.2
pH Value
The pH Scale
The pH scale is a set of number that determines the degree of acidity or alkalinity of a substance.
The pH value would be:
7 for neutral substance.
> 7 for alkaline substance (
\(OH^- > H^+\)
)
< 7 for acidic substance (
\(H^+ > OH^-\)
)
\(\xleftarrow[]{\textbf{Acidity } \uparrow}\)
Neutral
\(\xrightarrow[]{\textbf{Alkalinity } \uparrow}\)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Definition of pH
a logarithmic measurement of the concentration of hydrogen ions, š»+ contained in an aqueous solution.
Formula of pH
\(pH = -log[H^+]\)
Concentration of Hydroxide Ions,
\(OH^-\)
Is used to calculate the pOH value.
Formula of pOH
\(pOH = -log[OH^-]\)
Hubungan pH dan pOH
\(pH + pOH=14\)
\(pH=14 - pOH\)
Relationship of pH value with Concentration of Hydrogen Ion and Hydroxide Ion
Relationship of concentration
\(H^+\)
with pH
Concentration
\(H^+\)
\(\uparrow\)
,
pH value
\(\downarrow\)
Relationship of Concentration
\(OH^-\)
with pH
Concentration
\(OH^-\)
\(\uparrow\)
,
pH value
\(\uparrow\)
Measurement of the pH Value of A Solution
Apparatus for Measuring pH Values
Universal Indicator
The universal indicator will change colour, and it indicates what the pH based on the colour produced is.
The universal indicator can be found in two forms; solution or paper strips.
pH Meter
The pH meter is an instrument that is used to measure the pH value of a solution accurately.
pH meter shows the number of the pH value in the screen.
The pH Value of Few Items in Daily LifeTested with the Universal Indicator
Material
pH Value
Battery
0
Gastric juice
1
Lemon
2
Vinegar
3
Tomato
4
Coffee
5
Milk
6
Water
7
Blood
8
Baking soda
9
Antacid
10
Ammonia solution
11
Soap
12
Bleach
13
Sewage pipe cleaner
14
pH Value
6.2
pH Value
The pH Scale
The pH scale is a set of number that determines the degree of acidity or alkalinity of a substance.
The pH value would be:
7 for neutral substance.
> 7 for alkaline substance (
\(OH^- > H^+\)
)
< 7 for acidic substance (
\(H^+ > OH^-\)
)
\(\xleftarrow[]{\textbf{Acidity } \uparrow}\)
Neutral
\(\xrightarrow[]{\textbf{Alkalinity } \uparrow}\)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Definition of pH
a logarithmic measurement of the concentration of hydrogen ions, š»+ contained in an aqueous solution.
Formula of pH
\(pH = -log[H^+]\)
Concentration of Hydroxide Ions,
\(OH^-\)
Is used to calculate the pOH value.
Formula of pOH
\(pOH = -log[OH^-]\)
Hubungan pH dan pOH
\(pH + pOH=14\)
\(pH=14 - pOH\)
Relationship of pH value with Concentration of Hydrogen Ion and Hydroxide Ion
Relationship of concentration
\(H^+\)
with pH
Concentration
\(H^+\)
\(\uparrow\)
,
pH value
\(\downarrow\)
Relationship of Concentration
\(OH^-\)
with pH
Concentration
\(OH^-\)
\(\uparrow\)
,
pH value
\(\uparrow\)
Measurement of the pH Value of A Solution
Apparatus for Measuring pH Values
Universal Indicator
The universal indicator will change colour, and it indicates what the pH based on the colour produced is.
The universal indicator can be found in two forms; solution or paper strips.
pH Meter
The pH meter is an instrument that is used to measure the pH value of a solution accurately.
pH meter shows the number of the pH value in the screen.
The pH Value of Few Items in Daily LifeTested with the Universal Indicator
Material
pH Value
Battery
0
Gastric juice
1
Lemon
2
Vinegar
3
Tomato
4
Coffee
5
Milk
6
Water
7
Blood
8
Baking soda
9
Antacid
10
Ammonia solution
11
Soap
12
Bleach
13
Sewage pipe cleaner
14
Chapter : Acids, Bases and Salts
Topic : pH Value
Form 4
Chemistry
View all notes for Chemistry Form 4
Related notes
The Role of Water in Showing Acidic and Alkaline Properties
Strength of Acids and Alkalis
Chemical Properties of Acids and Alkalis
Concentration of Aqueous Solutions
Standard Solution
Neutralisation
Salts, Crystals and Their Uses in Daily Life
Preparation of Salts
Effect of Heat on Salts
Qualitative Analysis
Report this note
Quiz Battle
Challenge your friend in timed Quiz battle
Learn more
Register for a free Pandai account now
Edit content
×
Loading...
Quiz
Videos
Notes
Account