8 original questions from New Regents. The worksheet, answer key, and browser practice are free.
Acid Strength and Conductivity 4 questions
Acid Strength and Conductivity
New Regents original practice • Name: ____________________ Date: __________ Show your work for written answers.
In these models, a monoprotic acid can transfer one proton to water per acid molecule. A stronger acid transfers a proton from a larger fraction of its molecules at the same starting concentration.
Question 1
Which observation indicates greater acid strength at equal initial concentration in this model?
- More of the acid molecules transfer a proton to water.
- Fewer acid molecules transfer a proton to water.
- Both samples contain the same volume.
- One container is made of darker glass.
Question 2
Explain why ions formed when an acid reacts with water allow the solution to conduct electricity.
Write your answer and work on the printable worksheet, or answer online.
Question 3
Which statement compares concentration and strength correctly?
- Concentration gives amount per volume, and strength concerns how readily the acid ionizes.
- Concentration and strength both mean the container volume.
- All dilute acids are weak acids.
- A stronger acid always has a higher starting concentration.
Question 4
Two acid samples have different initial concentrations. Explain why a higher conductivity reading alone cannot identify which acid is stronger.
Write your answer and work on the printable worksheet, or answer online.
Comparing Acid Samples 4 questions
Comparing Acid Samples
Use the information below to answer the questions.
A simulation tracks monoprotic acids at equal initial concentration, equal volume, and equal temperature. In this model the ions formed have equal mobilities. Water’s own ionization is omitted.
| Sample | Starting acid particles | Acid particles that ionized | Relative conductivity |
|---|---|---|---|
| P | 100 | 95 | 95 |
| Q | 100 | 25 | 25 |
| R | 100 | 5 | 5 |
Question 5
Which sample shows the greatest extent of acid ionization?
- P
- Q
- R
- All three are equal.
Question 6
Calculate the percentage of acid particles that ionized in Q.
Write your answer and work on the printable worksheet, or answer online.
Question 7
How many acid particles in R remain un-ionized?
- 5
- 25
- 90
- 95
Question 8
Use the simulation’s particle counts to explain why P has greater conductivity than Q.
Write your answer and work on the printable worksheet, or answer online.
2025 Chemistry Reference Tables · Browse Chemistry worksheets