For a first order chemical reaction, the rate constant_________________?
Correct answer: A. Has unit of time-1
- A. Has unit of time-1
- B. Is not a function of the unit of time
- C. Changes on changing the concentration units
- D. None of these
Explanation
For a first-order law, rate = kC, so k must have units of inverse time, such as s⁻¹. Its numerical value changes if the time unit changes, but its dimensional form remains time⁻¹.
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