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
nasty-shy [4]
3 years ago
12

Calculate the [ H + ] and pH of a 0.0040 M butanoic acid solution. The K a of butanoic acid is 1.52 × 10 − 5 . Use the method of

successive approximations in your calculations.
Chemistry
1 answer:
stellarik [79]3 years ago
4 0

Answer:

Ka= [H+][But-]/H[Hbut]

Let k moles of H+ be formed

1.52*10^-5=k^2/0.004-k

K^2=0.004*1.52*10^-5-1.52*10^-5k

K^2- 1.52*10^-5k-6.08*10^-8=0

Solving this quadratic equation.

K=7.6*10^-6

PH=-log(7.6*10^-6)=5.2

You might be interested in
How many isomers does propane have?<br> 01<br> 02<br> 03<br> 05
Irina18 [472]

Answer:

A.) 1

Explanation:

Propane only exists in one conformation. It does not have enough carbons to form branches, and there are only hydrogens attached to each carbon. Furthermore, there is no way to twist the carbon or change its orientation (ex. cis- and trans-) to result in a different structure of propane. There is no other way to represent the molecule without drawing a different molecule.

5 0
2 years ago
PLEASE HELP ME OUT!!
vesna_86 [32]

Answer:

hydrogen

Explanation:

7 0
3 years ago
Which chemical reaction is a single replacement reaction? A. Ba(ClO3)2 —&gt; BaCl2 + 3O2 B. 2Mg + O2 —&gt; 2MgO C. Zn + CuCl2 —&
professor190 [17]
I believe the correct answer is C. <span>Zn + CuCl2 —> ZnCl2 + Cu</span>
8 0
3 years ago
Which two statements describe what happens to the nuclei of atoms during a fusion reaction? O A. Large nuclei break apart into t
pashok25 [27]

Answer:

D. Nuclei with small masses combine to form nuclei with larger masses.

B. A small amount of mass in the nuclei that combine is converted to energy

Explanation:

A nuclear fusion, in contrary to fission, is the process by which the nuclei of two atoms combine to form a much larger atom with a large nuclei. Likewise, during a fusion reaction, a large amount of energy is released from the small amount of mass in the nuclei (two) that combines.

According to this question, the following are true of a fusion reaction:

- Nuclei with small masses combine to form nuclei with larger masses.

- A small amount of mass in the nuclei that combine is converted to enormous energy.

3 0
3 years ago
Read 2 more answers
Why does common table salt (NaCl) have a high melting point?
schepotkina [342]
The correct answer is c
8 0
3 years ago
Other questions:
  • PLEASE! :( Two aqueous solutions of AgNO3 and NaCl are mixed. Which of the following diagrams best represents the mixture? For s
    12·1 answer
  • 1. Stirring increases the rate of solution
    15·1 answer
  • What is stationary in science?​
    5·1 answer
  • When atomic orbitals of two nuclei overlap, the mutual attraction between a negatively charged electron pair and the two positiv
    9·1 answer
  • What is the identity of the element that has 19 protons and 22 neutrons?
    13·1 answer
  • Write the complete nuclear symbol for a nucleus of oxygen with 8 protons &amp; 10 neutrons?
    15·1 answer
  • Convert 3,526 meters (m) into kilometers (km). (Don't forget units)<br> EN<br> Voranean
    12·1 answer
  • The diagram below shows an electromagnet. Using your scientific knowledge, state the device that is used to measure the potentia
    10·1 answer
  • Balance the following redox reaction if it occurs in acidic solution. What are the coefficients in front of h2c2o4 and h2o in th
    9·1 answer
  • A 2.0 L container of nitrogen gas had a pressure of 3.2 atm. What volume would be necessary to decrease the pressure to 1.0 atm
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!