[H3O^+(aq)] Drops of Stock Solutions Reaction Time Test Tube KMnO4 H2O H3O^+/ H2
ID: 1065342 • Letter: #
Question
[H3O^+(aq)]
Drops of Stock Solutions
Reaction Time
Test Tube
KMnO4
H2O
H3O^+/H2SO4
C2O4H2
C-1
15
25
5
5
14mins 3 sec
C-2
15
15
15
5
8mins 10sec
C-3
15
5
25
5
3mins 8 sec
a. Is H3O+ a reactant or a product in the reaction? What effect did increasing the amount of H3O+ have on the rate of the reaction?
b. How does the reaction time relate to rate of reaction – do long reaction times reflect slow reaction rates or fast reaction rates? While we are not explicitly measuring the rates of these reactions, you can use the time of the reaction to stand in for the rate of reaction.
c. By what factor did the concentration of H3O+ change from C-1 to C-2. By what factor did the rate of the reaction change from C-1 to C-2?
d. If the rate of a reaction changes by a substantial amount (factor of 2 or more) when the concentration of a reactant changes, then the rate of the reaction is considered to be dependent on the concentration of that reactant. Would you say that the rate of the reaction depends on the concentration of H3O+ in solution?
[H3O^+(aq)]
Drops of Stock Solutions
Reaction Time
Test Tube
KMnO4
H2O
H3O^+/H2SO4
C2O4H2
C-1
15
25
5
5
14mins 3 sec
C-2
15
15
15
5
8mins 10sec
C-3
15
5
25
5
3mins 8 sec
Explanation / Answer
From the given data
a. H3O+ is reactant. Increasing H3O+ would thus increase the rate of reaction, more product would be formed.
b. Rate of reaction is inversely related to the time of reaction. Lower the time, greater is the rate of reaction.
c. From C1 to C2, the [H3O+] concentration is tripled. The rate of reaction doubled from C1 to C2.
d. From the data C-1 to C-3, the rate of reaction changes as we change the [H3O]+ concentration, thus, the reaction depends upon the concentration of [H3O+] ion.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.