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
romanna [79]
3 years ago
5

Calculate the pH of a 0.50 M HIO. The Ka of hypoiodic acid, HIO, is 2.3x10–11.0.305.325.479.474.80

Chemistry
1 answer:
never [62]3 years ago
7 0

Answer:

pH = 5.47

Explanation:

The equilibrium that takes place is:

HIO ↔ H⁺ + IO⁻

Ka = \frac{[H+][IO-]}{[HIO]} = 2.3 * 10⁻¹¹

At equilibrium:

  • [HIO] = 0.5 M - x
  • [H⁺] = x
  • [IO⁻] = x

<u>Replacing those values in the equation for Ka and solving for x:</u>

Ka=\frac{x^2}{0.5-x}=2.3*10^{-11} \\x^2=(2.3*10^{-11})(0.5-x)\\x^2=1.15*10^{-11}-2.3*10^{-11}x\\x^2+2.3*10^{-11}x-1.15*10^{-11}=0\\x=3.39*10^{-6}

Then [H⁺]=3.39 * 10⁻⁶, thus pH = 5.47

You might be interested in
What is an organic chemical?
andriy [413]

Answer:

B is correct answer ...

8 0
3 years ago
Explain how the tasks an organism completes will influence their cellular respiration levels.
Debora [2.8K]

Answer:

All living things use cellular respiration to turn organic molecules into energy. ... This process makes energy from food molecules available for the organism to carry out life processes. Cellular respiration usually occurs in the presence of oxygen. This is called aerobic respiration.

6 0
3 years ago
Draw a line-bond structure for CBrN. Explicitly draw all H atoms. You do not have to include lone pairs in your answer. In cases
DochEvi [55]

Answer:

Br - C ≡ N

Explanation:

To draw the Lewis line-bond structure we need to bear in mind the octet rule, which states that in order to gain stability each <em>atom tends to share electrons until it has 8 electrons in its valence shell</em>.

  • C has 4 e⁻ in its valence shell so it will form 4 covalent bonds.
  • Br has 7 e⁻ in its valence shell so it will form 1 covalent bond.
  • N has 5 e⁻ in its valence shell so it will form 3 covalent bonds.

The most stable structure that respects these premises is:

Br - C ≡ N

It does not have any H atom.

8 0
2 years ago
Which of the following is not a clue that a chemical reaction has taken place? *
DaniilM [7]

Answer:

A pure solid is heated and turns into a pure liquid.

Explanation:

No colour change recorded, only change of state, hence this is a physical change - physical changes I.e. change of state and temperature are not chemical reactions.

7 0
3 years ago
Give an example of a change that would be a chemical change but not a physical change.
Annette [7]

Answer:

digesting food

Explanation:

you dont see it

4 0
2 years ago
Read 2 more answers
Other questions:
  • Convert the temperature of the coldest area in freezer, -10 fahrenheit, to degrees celsius and kelvin.
    8·2 answers
  • 3. What does this tell you about the relative tonicity (osmotic pressure) between the contents of the tubing and the solution in
    10·1 answer
  • C=h/[M(T2-T1)] solve for T1
    14·1 answer
  • A(n) __________ eclipse might occur when the Earth, Moon, and Sun are in the positions shown in the picture.
    13·2 answers
  • Why do experiments need to be repeatable?
    7·2 answers
  • A balloon contains 0.5 L of air at 101.5 kPa. You squeeze it to a volume of 0.25 L. What is the pressure of air inside the ballo
    6·1 answer
  • I want the answer of first and last question not middle question answer ​
    5·2 answers
  • 3.06: Laboratory: Titration
    7·1 answer
  • ........PLEASE HELP........
    11·1 answer
  • 8.5 g of rubidium are reacted completely with water.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!