[03[0 k[02lc4C

Another useful expression can be obtained by subtracting equation (B) from (A). We obtain

which by rearrangement and cancellation becomes rate3 = rate2 — ratej

It is known from experiment that rate2 (and rate3) is much larger than ratej, so the latter can be neglected here, giving simply rate3 — rate2

Using the expressions for these two reaction rates in terms of the concentrations of their reactants,

Coping with Asthma

Coping with Asthma

If you suffer with asthma, you will no doubt be familiar with the uncomfortable sensations as your bronchial tubes begin to narrow and your muscles around them start to tighten. A sticky mucus known as phlegm begins to produce and increase within your bronchial tubes and you begin to wheeze, cough and struggle to breathe.

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