ANALYTICAL CHEMISTRY EXAMINATION QUESTIONS AND CORRECT ANSWER WITH EXPLANTATION GRADED A+ STUDY GUIDE

ANALYTICAL CHEMISTRY EXAMINATION QUESTIONS
AND CORRECT ANSWER WITH EXPLANTATION GRADED
A+ STUDY GUIDE SOUTHERN NEW HAMPSHIRE
UNIVERSITY
1. Analytical chemistry is the study of:
A. Composition of substances
B. Living organisms
C. Weather systems
D. Planetary motion
Answer: A
Rationale: It focuses on identifying and quantifying chemical components.

2. The two main branches of analytical chemistry are:
A. Qualitative and quantitative analysis
B. Organic and inorganic
C. Solid and liquid
D. Acid and base
Answer: A
Rationale: Identification vs measurement of substances.

3. Qualitative analysis determines:
A. What is present
B. How much is present
C. Temperature
D. Mass only
Answer: A
Rationale: Identifies substances.

4. Quantitative analysis determines:
A. Amount of substance
B. Color only
C. Shape only
D. Smell only
Answer: A
Rationale: Measures concentration or quantity.

,5. A sample is:
A. Portion of material analyzed
B. Entire universe
C. Pure theory
D. Instrument only
Answer: A
Rationale: Representative portion of substance.

6. An analyte is:
A. Substance being measured
B. Solvent only
C. Catalyst only
D. Instrument
Answer: A
Rationale: Target compound.

7. A standard solution has:
A. Known concentration
B. Unknown concentration
C. No solute
D. No solvent
Answer: A
Rationale: Used for calibration.

8. Primary standard is:
A. Very pure substance
B. Impure mixture
C. Gas only
D. Unknown compound
Answer: A
Rationale: Used to prepare standard solutions.

9. Titration is used to determine:
A. Concentration
B. Temperature
C. Pressure
D. Color
Answer: A
Rationale: Quantitative analysis method.

, 10. Indicator is used to:
A. Show end point
B. Increase reaction speed
C. Measure mass
D. Produce gas
Answer: A
Rationale: Color change signals reaction completion.

11. End point in titration is:
A. Observed color change
B. Start of reaction
C. Maximum temperature
D. Solid formation only
Answer: A
Rationale: Indicator change point.

12. Equivalence point is:
A. Exact stoichiometric point
B. Color change only
C. Random point
D. Initial state
Answer: A
Rationale: Moles of acid = moles of base.

13. Accuracy refers to:
A. Closeness to true value
B. Reproducibility
C. Speed of reaction
D. Color intensity
Answer: A
Rationale: Correctness of measurement.

14. Precision refers to:
A. Repeatability of results
B. Correct value
C. Random error
D. Mass only
Answer: A
Rationale: Consistency of measurements.