Reaction Rates Using Moles Flashcards

All 4 cards in this deck

What unit is used for rate of reaction when the quantity of reactant or product is measured in moles?

mol/s (moles per second).

What are the steps to calculate a mean rate of reaction in mol/s?
e.g. 0.0030 mol of gas collected in 60 s

1. Find the change in moles: $0.0030$ mol
2. Divide by the time taken: $0.0030 \div 60$
3. Mean rate $= 5 \times 10^{-5}$ mol/s

What does a rate of reaction of $2.8 \times 10^{-5}$ mol/s mean?

$2.8 \times 10^{-5}$ moles of product are formed (or reactant used up) each second.

True or false? For the same reaction, the rate in mol/s and the rate in cm$^3$/s are different numbers.

True. They measure the same reaction using different quantities, so the numerical values differ.