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WorksheetsAcids and Bases Quiz
Total questions: 24
Worksheet time: 16mins
Which of the following is a Brønsted–Lowry acid?
NH₃
OH⁻
HCl
NaOH
A strong acid completely dissociates in water, while a weak acid only partially dissociates. True or False?
True
False
Which pair is a conjugate acid–base pair?
H₂O / OH⁻
HCl / NaCl
H₂SO₄ / SO₄²⁻
NaOH / OH⁻
Explain why ammonia (NH₃) is considered a weak base in water.
It fully dissociates in water.
It partially dissociates in water.
It does not react with water.
It forms a strong acid in water.
What is the pH of a solution with [H⁺] = 1 × 10⁻³ M?
3
7
10
1
Why is vinegar (acetic acid) used in food considered safer to consume compared to hydrochloric acid?
It is weaker and only partially dissociates.
It has no hydrogen ions.
It is nonpolar.
It neutralizes stomach acid.
What is the effect of adding HCl to water compared to adding HCl to a buffer solution?
Both will have the same pH change.
Water will have a greater pH change.
Buffer solution will have a greater pH change.
Neither will change pH.
In a buffer solution, what component reacts with the OH⁻ when 0.01 mol of NaOH is added?
Water
Acid component of the buffer
Base component of the buffer
Na⁺ ions
During surgery, a patient’s blood pH shifts to 7.8. What could happen if not corrected?
No effect—pH change is small.
Proteins may denature, impairing function.
Buffers will eliminate the change completely.
Oxygen delivery will increase dramatically.
Why would it be dangerous to give a patient pure water intravenously instead of an isotonic, buffered saline solution?
It would cause dehydration.
It would dilute blood electrolytes, causing cell damage.
It would increase blood pressure.
It would have no effect.
Which IV fluid would best treat acidosis?
0.9% NaCl (neutral saline)
Sodium bicarbonate solution
5% glucose solution
Vinegar solution
A nursing student says, “Since strong acids are dangerous, we only need to study those in healthcare.” Do you agree or disagree? Explain with examples.
Agree, because strong acids are more harmful.
Disagree, because weak acids also play important roles.
Agree, because only strong acids are used in treatments.
Disagree, because acids are not relevant in healthcare.
Design a simple buffer solution that could maintain pH near 7. Write the components you would use and why.
Hydrochloric acid and sodium hydroxide
Acetic acid and sodium acetate
Sulfuric acid and potassium hydroxide
Nitric acid and ammonium nitrate
Imagine you are designing an antacid. What chemical properties must it have to safely neutralize stomach acid without raising pH too high?
It should be highly acidic.
It should be a strong base.
It should be a weak base.
It should be neutral.
A patient asks why they can drink orange juice (pH ~3.5) without their blood becoming acidic. Write a short explanation using the concept of buffers.
Buffers in the blood neutralize the acid.
The body removes all acids immediately.
Orange juice is not acidic enough to affect blood.
The stomach neutralizes all acids before absorption.
A solution has a pH of 5.79.
What is its pOH?
What is the pH of a 0.10 M solution of NaOH?
14
13
4
2
If the [H3O+] of a solution is 1 x 10-3 M, the pH is
11
-3
3
1
What is the [OH-] if the [H+] is 1.0 x 10-3 M?
1.0 x 10-3 M
6.02 x 10-23 M
1.0 x 10-14 M
1.0 x 10-11 M
Label the acid, base, conjugate acid and conjugate base.
In this experiment, Juan and Gabe needed to mantain the solution at about 7pH. When Juan added the HCl, He needed to stop the pH from (a) . To do this He needed to use a buffer solution of a (b) and its congiate acid. A base is a H+ (c) , which (d) a solutions concentration of H+ ions. In Juan and Gabe's solution the weak base takes up the (e) from the HCl . In this way, The weak base prevents the H+ ions from the HCl contributing significanlty to the buffer solution's pH. The buffer solution's pH remains inchanged, keeping the experimental solution around 7 pH
decreasing
weak base
acceptor
decreases
H+ ions
increasing
increase
rejector
OH-
When using the Bronsted Lowry definition of acids and bases, the base will ______________ a hydrogen proton.
donate
accept
