12.1 Reaction Rates

Question 1

What is chemical kinetics?

Answer 1

Its a type of chemistry that studies the speed of a reaction

Question 2

Reaction rate formula?

Answer 2

Rate= conc change / time change
or
Rate= ([A] at time t2 - [A] at time t1)/t2-t1
= ∆[A]/∆t
ALWAYS POSITIVE sooo if we put A is reactant, must change to positive. If A is product, already positive.

Question 3

What do we call reaction rate formula that deal with reactant?

Answer 3

Rate of decomposition

Question 4

What do we call reaction rate formula that deal with product?

Answer 4

Rate of formation

Question 5

2N2O5 -> 4NO2 + O2

the formation rate of O2 is 9x 10^-6 M/s. What is the formation rate of NO2? what is the overall rate?

Answer 5

NO2 = O2 x 4

Overall rate = O2 rate or NO2 rate/4 or N2O5 rate/2

Question 6

C6H12O6 (aq) → 2 C2H5OH(aq) + 2 CO2 (aq)

Write the relationship in terms of ∆ [C2H5OH] / ∆ t and ∆ [C2H12O6] / ∆t

Answer 6

∆ [C2H5OH] /∆t = - 2 ∆ [C6H12O6] /∆t