1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anna007 [38]
3 years ago
8

The pH of a 1.0M solution of butanoic acid HC4H7O2 is measured to be 2.41. Calculate the acid dissociation constant Ka of butano

ic acid.
Chemistry
1 answer:
Lubov Fominskaja [6]3 years ago
3 0

Answer:

Ka = 1.52 E-5

Explanation:

  • CH3-(CH2)2-COOH ↔ CH3(CH2)2COO-  + H3O+

⇒ Ka = [H3O+][CH3)CH2)2COO-] / [CH3(CH2)2COOH]

mass balance:

⇒<em> C</em> CH3(CH2)2COOH = [CH3(CH2)2COO-] + [CH3(CH2)2COOH] = 1.0 M

charge balance:

⇒ [H3O+] = [CH3(CH2)2COO-]

⇒ Ka = [H3O+]²/(1 - [H3O+])

∴ pH = 2.41 = - Log [H3O+]

⇒ [H3O+] = 3.89 E-3 M

⇒ Ka = (3.89 E-3)² / ( 1 - 3.89 E-3 )

⇒ Ka = 1.519 E-5

You might be interested in
Zinc + Hydrogen Chloride <br> What is proof of a chemical reaction?
maria [59]

Answer:

zncl2. . . . . . . . . . . . . . . .

7 0
3 years ago
Read 2 more answers
How is conductivity related to pH?​
timama [110]

Answer:

Strongly acidic [or strongly basic] solution will have high conductivity.

Explanation:

3 0
3 years ago
Read 2 more answers
Ava’s best friend has an indoor cat. Ava notices that she sneezes every time that she visits her friend. Ava suspects that she i
zlopas [31]

Answer:

I say for her to test her suspicion by going to see an allergist to diagnose the allergy.

7 0
3 years ago
Number of
Sever21 [200]

Answer:1:En química, el número másico o número de masa es la suma del número de protones y el número de neutrones del núcleo de un átomo. Se simboliza con la letra A (el uso de esta letra proviene de alemán Atomgewicht, que quiere decir peso atómico, aunque sean conceptos distintos que no deben confundirse).

2:

4 0
3 years ago
4. Write the electronic configuration of first 20 elements in the periodic table.
DIA [1.3K]

Answer:

Name Atomic Number Electron Configuration Period 1 Hydrogen 1 1s1 Helium 2 1s2 Period 2 Lithium 3 1s2 2s1 Beryllium 4 1s2 2s2 Boron 5 1s2 2s22p1 Carbon 6 1s2 2s22p2 Nitrogen 7 1s2 2s22p3 Oxygen 8 1s2 2s22p4 Fluorine 9 1s2 2s22p5 Neon 10 1s2 2s22p6 Period 3 Sodium 11 1s2 2s22p63s1 Magnesium 12 1s2 2s22p63s2 Aluminum 13 

7 0
3 years ago
Other questions:
  • What is the mass of the light bulb and paperclips together?
    9·2 answers
  • A gas has a volume of 25.6 L at a temperature of 278 K. What will be the new temperature, in C, if
    14·1 answer
  • Which would result in radioactive decay? Check all that apply.
    5·2 answers
  • You are given a cube with a length of 2.5 a width of 2.5 cm and a height of 2.5 cm you place it on a scale and its mass is 295g
    15·1 answer
  • What is the difference between mass number and atomic mass???
    15·1 answer
  • What is the oxidation state of cr in CrPO4 and Cr3(PO4)2?
    7·2 answers
  • How are sound waves can be used for various applications
    5·1 answer
  • Copy and balance these chemical equations "K​
    9·1 answer
  • When the number of electrons in an atom changes, then the atom's_______ change.
    7·1 answer
  • Which describes the law of conservation of matter?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!