EXP 9- pH and indicators(a) What is the pH of() 0.10 М КОН (аq)(ii) 0.15 M HNO3(aq)(iii) the solution resulting from the addition of 15 mL of 0.10 M KOH(aq) to 20 mL of 0.15M HNO3(aq).(b) What is the color of the solutions given (a) when two drops of thymol blue are added?pH 1.22.8pH 8.0-9.6pH9.6 < EXP 6- Effect of temperature on reaction rateTo observe the effect of temperature on reaction rate, the reaction between KMNO4 and H2C2O4in acidic media is performed according to the given redox reaction:2 MnO4 (aq)+ 16 H"(aq)+ 5 C20.²(aq) 10 CO2(g)+ 2 Mn²"(aq)+ 8 H20(I)At various temperatures, the rate constants were determined experimentally as follows:T ('C)k (M s!)5.03x1053.68x106.71x10203560900.119(a) Determine E, for this reaction by a graphical method (see the graph given below).(b) Determine E, using Arrhenius equation using tabulated data.(c) Calculate the value of the rate constant, k at 100°C.-2-4०-8-10Windows'u EtkinlestirPindowsu etkinlestimeiçin Ayarlara gio-120.00250.00270.00290.00310.00330.0035

Answered: Image /qna-images/answer/446f80e6-bb5c-4539-a2aa-fbfcf7a37c54.jpg

(a) What is the pH of () 0.10 М КОН(аq) (ii) 0.15 M HNO3(aq) (iii) the solution resulting from the addition of 15 mL of 0.10 M KOH(aq) to 20 mL of 0.15 M HNO3(aq). (b) What is the color of the solutions given (a) when two drops of thymol blue are added?

(a) What is the pH of () 0.10 М КОН(аq) (ii) 0.15 M HNO3(aq) (iii) the solution resulting from the addition of 15 mL of 0.10 M KOH(aq) to 20 mL of 0.15 M HNO3(aq). (b) What is the color of the solutions given (a) when two drops of thymol blue are added?

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 8ALQ: You have a solution of the weak acid HA and add some of the salt NaA to it. What are the major...

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Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.

Question

EXP 9- pH and indicators
(a) What is the pH of
() 0.10 М КОН (аq)
(ii) 0.15 M HNO3(aq)
(iii) the solution resulting from the addition of 15 mL of 0.10 M KOH(aq) to 20 mL of 0.15
M HNO3(aq).
(b) What is the color of the solutions given (a) when two drops of thymol blue are added?
pH 1.2
2.8
pH 8.0-9.6
pH9.6 <
<pH 1.2
pH 2.8 - 8.0
Thymol
blue
Red
Orange
Yellow
Green
Blue
EXP 10 Redox Reactions

EXP 6- Effect of temperature on reaction rate
To observe the effect of temperature on reaction rate, the reaction between KMNO4 and H2C2O4
in acidic media is performed according to the given redox reaction:
2 MnO4 (aq)+ 16 H"(aq)+ 5 C20.²(aq) 10 CO2(g)+ 2 Mn²"(aq)+ 8 H20(I)
At various temperatures, the rate constants were determined experimentally as follows:
T ('C)
k (M s!)
5.03x105
3.68x10
6.71x10
20
35
60
90
0.119
(a) Determine E, for this reaction by a graphical method (see the graph given below).
(b) Determine E, using Arrhenius equation using tabulated data.
(c) Calculate the value of the rate constant, k at 100°C.
-2
-4
०
-8
-10
Windows'u Etkinlestir
Pindowsu etkinlestimeiçin Ayarlara gio
-12
0.0025
0.0027
0.0029
0.0031
0.0033
0.0035

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