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
Ivahew [28]
3 years ago
9

When a 17.7 mL sample of a 0.368 M aqueous hypochlorous acid solution is titrated with a 0.301 M aqueous barium hydroxide soluti

on, what is the pH after 16.2 mL of barium hydroxide have been added
Chemistry
1 answer:
nordsb [41]3 years ago
8 0

Answer:

pH = 12.98

Explanation:

Step 1: Data given

Volume of aqueous hypochlorous acid solution = 17.7 mL = 0.0177 L

Molarity of aqueous hypochlorous acid solution = 0.368 M

Molarity of aqueous barium hydroxide solution = 0.301 M

Volume of aqueous barium hydroxide solution = 16.2 mL = 0.0162 L

Step 2: The balanced equation

2HCl + Ba(OH)2 → BaCl2 + 2H2O

Step 3: Calculate moles

Moles = molarity * volume

Moles HCl = 0368 M * 0.0177 L

Moles HCl = 0.0065136 moles

Moles Ba(OH)2 = 0.301 M * 0.0162 L

Moles Ba(OH)2 = 0.0048762 moles

Step 4: Calculate the limiting reactant

For 2 moles HCl we need 1 mol Ba(OH)2 to produce 1 mol BaCl2 and 2 moles H2O

HCl is the limiting reactant. It will completely be consumed 0.0065136 moles. Ba(OH)2 is in excess. There will react 0.0065136/2 = 0.0032568‬ moles. There will remain 0.0048762 moles - 0.0032568‬  = 0.0016194 moles

Step 5: Calculate molarity Ba(OH)2

Molarity Ba(OH)2 = moles / volume

Molarity Ba(OH)2 = 0.0016194 moles / 0.0339 L

Molarity Ba(OH)2 = 0.04777 M

Step 6: Calculate [OH-]

Ba(OH)2 → Ba^2+ + 2OH-

For Ba(OH)2 we have 2* [OH-]

[OH-] = 2*0.04777 = 0.09554 M

Step 7: Calculate pOH

pOH = -log[OH-]

pOH = -log(0.09554)

pOH = 1.02

Step 8: Calculate pH

pH = 14 - 1.02

pH = 12.98

You might be interested in
Which of the following is an example of chemical weathering?
Nonamiya [84]

Answer:O B. Weak acid breaks down minerals by reacting with them.

Explanation:

Chemical weathering is the process whereby rain water which sometimes can be acidic ( As rain falls down it reacts with CO2 in the atmosphere and form acid rain), This  reacts  with the minerals contained in rocks, dissolves and degrades  them further to form entire  new minerals.

An example of a rock that is greatly affected by overexposure of  acid rain is  limestone containing calcite  which easily degrades by acid rain.

Other processes whereby Chemical weathering can occur are through reaction with water and oxygen.

4 0
2 years ago
What is the total number of Ions in N2O3?
aleksandrvk [35]
The total number of lone pairs of electrons in N2O3 is 8.
4 0
2 years ago
Read 2 more answers
Which is radioactive decay
Liula [17]

Answer:

Explanation:all

7 0
2 years ago
What is the energy produced through cellular respiration called?
tresset_1 [31]

Answer:

During the process of glycolysis in cellular respiration, glucose is oxidized to carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).

4 0
3 years ago
Help with this please
zvonat [6]

Answer:

electrolytes yes it is

Explanation:

i'm built different

8 0
3 years ago
Other questions:
  • Some molecules that are covalently bonded do not have a difference in charge across the molecule. These molecules are referred t
    15·1 answer
  • What is ozone ? A) dissolved oxygen B) the main catalyst in photosynthesis C) a type of oxygen D) a form of calcium carbonate
    9·2 answers
  • What is the concentration (m) of ch3oh in a solution prepared by dissolving 16.8 g of ch3oh in sufficient water to give exactly
    5·1 answer
  • What mass of copper is equivalent to 0.7moles?​
    10·1 answer
  • What is the charge of the hydride ion?​
    10·1 answer
  • Iron fillings sprinkled near a magnet arrange themselves into a pattern that illustrates the
    6·1 answer
  • What is the electron configuration of the calcium ion?
    5·1 answer
  • Balance the following equations by inserting the proper coefficients.
    14·1 answer
  • Help pls i give 20 points
    7·1 answer
  • A chemistry student wants to learn how pressure and volume affect one another. They gather a sample of helium from a ballon and
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!