Quantitative Analysis Quiz
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5 questions, one answer each
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1. What three pieces of apparatus are essential for an accurate acid-alkali titration?
- A. Test tube, funnel, indicator
- B. Burette, pipette, indicator
- C. Measuring cylinder, beaker, thermometer
- D. Gas syringe, burette, funnel
2. What is the formula for percentage yield?
- A. (theoretical yield / actual yield) x 100
- B. (actual yield / theoretical yield) x 100
- C. actual yield - theoretical yield
- D. theoretical yield / 100
3. What volume does one mole of any gas occupy at room temperature and pressure?
- A. 1 dm3
- B. 22.4 dm3
- C. 24 dm3
- D. 100 dm3
4. A student obtains 3.2 g of product from a reaction with a theoretical yield of 4.0 g. What is the percentage yield?
- A. 40%
- B. 60%
- C. 80%
- D. 125%
5. Two possible industrial routes can make the same product. Route A has a higher atom economy but a slower rate; Route B has a lower atom economy but a faster rate and produces a valuable by-product. Which statement best reflects how a company should choose between them?
- A. Always choose the route with the highest atom economy regardless of other factors
- B. Always choose the fastest route regardless of atom economy
- C. Weigh up atom economy, rate, and the value of by-products together, since a lower atom economy can be offset by a faster rate or a useful by-product
- D. Atom economy is irrelevant to industrial decision-making