Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer question 5 & estimate the amount of bromine used at the point where the addition of potassium has no effect on the amount of potassium bromide produced.
Transcribed Image Text:### Reaction Limiting Reactants
#### Graph Description:
The graph provided shows the relationship between the mass of potassium (K) in grams (g) and the mass of potassium bromide (KBr) produced in grams (g).
**Axes:**
- The x-axis represents the mass of potassium (K) in grams (g), ranging from 0 to 4 grams.
- The y-axis represents the mass of potassium bromide (KBr) produced in grams (g), ranging from 0 to 8 grams.
**Data Points:**
- The data points indicate a linear relationship up to a certain point. For mass of potassium (K) from 0 g to about 2.5 g, the mass of potassium bromide (KBr) produced increases linearly.
- Beyond 2.5 grams of potassium, the graph shows a plateau where the mass of potassium bromide (KBr) produced does not increase significantly and appears to be nearly constant at 7 grams.
#### Question 5:
**Which substance is the limiting reactant?**
- a. Solid potassium
- b. Liquid bromine
- c. Potassium bromide
- d. Oxygen
The correct answer is indicated based on the information provided in the graph, especially focusing on the plateau region where additional potassium does not increase the production of potassium bromide. This typically suggests that another reactant (in this case, liquid bromine) is the limiting reactant.
**Correct Answer: b. Liquid bromine**
Visit our Chemistry section for more interactive problems and helpful tutorials on stoichiometry and limiting reactants.
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