Question:medium
Identify the unit of rate constant for a first-order reaction.
Identify the unit of rate constant for a first-order reaction.
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Remember the common units of rate constants:
• Zero order: \[ \text{mol dm}^{-3}\text{s}^{-1} \]
• First order: \[ \text{s}^{-1} \]
• Second order: \[ \text{mol}^{-1}\text{dm}^3\text{s}^{-1} \] The unit changes with reaction order.
• Zero order: \[ \text{mol dm}^{-3}\text{s}^{-1} \]
• First order: \[ \text{s}^{-1} \]
• Second order: \[ \text{mol}^{-1}\text{dm}^3\text{s}^{-1} \] The unit changes with reaction order.
Updated On: May 19, 2026
- \(\text{mol dm}^{-3}\text{s}^{-1}\)
- \(\text{s}^{-1}\)
- \(\text{mol}^{-1}\text{dm}^3\text{s}^{-1}\)
- \(\text{mol dm}^{-3}\)
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The Correct Option is B
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