The pka of ethanoic acid, (CH3COOH) (0.1 M), is 2.6 at 25°C. Write the balanced chemical equation for the ionisation of CH3COOH. a. b. C. Ka = Write the expression for the equilibrium constant, Ka 0.1-x Conc (mol L-1) CH3COOH CH3COO- H3O+ Initial 0.100 Change BB Equilibrium + Complete the initial-change-equilibrium table for the species in the reaction CH3COOH CH3COO- H3O+ +X 0 OH- [CH3COOH] [CH3COO-] + 0.2 -0.1 -X H3O+ H₂O H₂O

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Chapter1: Chemical Foundations
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Using the information from the previous question, answer the following questions
(Note, use the E format for very small values, eg 1.0E-5 instead of 1.0x10-5)
d. What is the Ka for this reaction?
You can note any calculations you use here
e. Using the approximation method, calculate the concentration of H3O+
You can note any calculations you use here
f. Calculate the pH of the solution
You can note any calculations you use here
Transcribed Image Text:Using the information from the previous question, answer the following questions (Note, use the E format for very small values, eg 1.0E-5 instead of 1.0x10-5) d. What is the Ka for this reaction? You can note any calculations you use here e. Using the approximation method, calculate the concentration of H3O+ You can note any calculations you use here f. Calculate the pH of the solution You can note any calculations you use here
The pka of ethanoic acid, (CH3COOH) (0.1 M), is 2.6 at 25°C.
Write the balanced chemical equation for the ionisation of CH3COOH.
a.
b.
C.
Ka =
Write the expression for the equilibrium constant, Ka
Complete the initial-change-equilibrium table for the species in the reaction
Conc (mol L-1) CH³COOH CH³COO¯ H³O+
Initial
0.100
Change
Equilibrium
CH3COOH
+
H3O+
0.1-x +X
CH3COO-
0
OH-
[CH3COOH] [CH3COO-]
+
0.2 -0.1 -X
H3O+
H₂O
H₂O
Transcribed Image Text:The pka of ethanoic acid, (CH3COOH) (0.1 M), is 2.6 at 25°C. Write the balanced chemical equation for the ionisation of CH3COOH. a. b. C. Ka = Write the expression for the equilibrium constant, Ka Complete the initial-change-equilibrium table for the species in the reaction Conc (mol L-1) CH³COOH CH³COO¯ H³O+ Initial 0.100 Change Equilibrium CH3COOH + H3O+ 0.1-x +X CH3COO- 0 OH- [CH3COOH] [CH3COO-] + 0.2 -0.1 -X H3O+ H₂O H₂O
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