Interpretation:
The average rate of the reaction in the 22.3 s in moles of phenolphthalein needs to be determined, if it consumed per liter per second.
Concept introduction:
Answer to Problem 100A
Explanation of Solution
Given information:
The average rate of reaction depends on the time interval.
The average rate of reaction represents the change in concentration of reactant with change in time.
It can be written as:
Here:
- A = reactant
- t = time
Given:
Initial time = 0 sec
Final time = 22.3 sec
Initial moles = a moles
Final moles = a − 22.3 moles
Thus the average rate must be:
Thus,
Chapter 16 Solutions
Chemistry: Matter and Change
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