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WorksheetspH & Buffers
Total questions: 20
Worksheet time: 17mins
An acid has a pH
higher than 7
lower than 7
7
greater than 14
if you add an acid to a base what will happen?
BOOM
it will neutralize
it wont mix
According to the pH range which substance is more acidic than lemon juice
What might happen if buffers did not exist within the human body?
Our blood and other bodily fluids might become too acidic or basic.
Our stomach acid would not be able to break down food.
We would not be able to process glucose within our cells.
We would not be able to inhale oxygen into our lungs.
Two beakers have liquids in them. When you add a base such as ammonia to beaker 1, the pH did not change. But when you add ammonia to beaker 2, the pH changes drastically. Choose the best explanation.
Beaker 1 had only water and Beaker 2 contained a buffer.
Beaker 1 contained a buffer and Beaker 2 contained only water.
Beaker 2 contained an acid.
The beaker that changed pH contained a buffer.
Mixtures that would be considered buffers include which of the following?
I. 0.10 M HCl + 0.10 M NaCl
II. 0.10 M HF + 0.10 M NaF
III. 0.10 M HNO3 + 0.10 M NaNO3
I only
II only
III only
II and III
The pH of body fluids is tabilised by buffer systems. which of te following is the most effective buffer system at physiological pH?
Protein buffer
Bicarbonate Buffer
Phosphate Buffer
All of the above
UFFER
The pH of the body fluids is stabilised by buffer systems, which of the following is the most effective buffer system at physiological pH?
Protein Buffer
Bicarbonate buffer
Heemoglobin buffer
Phosphate buffer
Who invented the pH scale?
S.P.L.Sorenson
Benjamin Franklin
Henry Moseley
Wilhelmina Rontgen
What is normal ratio of bicarbonate buffer in blood?
10:1
20:2
20:1
1:20
————- is known as the alkali reserve of blood.
(a)
At ————— pH amino acid exist as zwitter ion.
(a)
Which form of hemoglobin acts as a strong acid?
Carb amino Hemoglobin
Oxygenated hemoglobin
Deoxygenated hemoglobin
Hemoglobin
——— — —- group of Histone molecule is responsible for the buffering action of hemoglobin.
(a)
