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Acids
Bases
Acid/ base Indicators
Acids and bases
pH
100
What colour does the blue litmus paper turn when put into an acid?
red
100
A weak base has a pH has the following range:
8 to 11
100
What indicator is red in the presence of an acid and blue in the presence of a base?
litmus
100
What is the difference between a strong and weak acid?
Strong acids completely dissociate while weak acids only partially dissociate.
100
If a substance has a pH of 7, it is said to be
neutral.
200
The six strong acids are .................
HCl(aq)- hydrochloric acid HBr(ag)- hydrobromic acid HI(aq) - hydroiodic acid HClO4(aq)- perchloric acid H2SO4(aq)- sufuric acid HNO3(aq)-nitric acid
200
The range of the pH value for a base is:
8 to 14
200
The universal indicator of strong acid is ___________.
purple or violet
200
Acids react with base create salt and water. This is called ___________.
neutralization
200
When dissolved in water, bases create a_______ion.
hydroxide
300
HF(aq)- hydrofloric acid H2CO3(aq)-carbonic acid These two acids are -----------
weak acids
300
Soap and bleach are _________.
bases
300
The colour of base in phenolphthalein is ____________
Pink or red
300
According to Bronsted-Lowry theory, acids _______ __________ion.
donate a H+
300
pH stands for:
power of hydrogen
400
The formula to calculate pH is ..............
pH= -log[H+]
400
The formula to calculate pOH= ........
pOH= - log[OH-]
400
Base changes blue litmus paper into ...........
blue
400
According to Arrhenius theory, a base contains ____ion.
hydroxide ion ( OH-)
400
The pH range for strong acids is between:
1 to 3
500
If pH= 6, the acid is .................
weak
500
If the pH= 14, the acid is ................
strong
500
If the colour of the pH paper of a solution is green, the solution is ___________.
neutral
500
Base accepts a proton and creates a:
conjugate acid
500
If the concentration of a solution is 0.00000000001, the pH is:
10