Question

For the hypothetical reaction: A + B ---> 2C, write an expression that relates the disappearance of A and B to the appearance of C. You can use the word delta instead of the symbol .

Answer 1

Rate expression has been given below

Step-by-step explanation:

According to the given equation, 1 molecule of A reacts with 1 molecule of B and produces 2 molecules of B at a time.

So, rate of disappearance of both A and B are one half of rate of appearance of B

Hence rate expression can be represented as:

`Rate=(-\Delta [A])/(\Delta t)=(-\Delta [B])/(\Delta t)=(1)/(2)(\Delta [C])/(\Delta t)`

where
`(-\Delta [A])/(\Delta t)` is rate of disappearance of A,
`(-\Delta [B])/(\Delta t)` is rate of disappearance of B and
`(\Delta [C])/(\Delta t)` rate of appearance of C