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
valkas [14]
3 years ago
15

He equation for the dissociation of pyridine is

Chemistry
1 answer:
sergeinik [125]3 years ago
3 0

Answer:

10.10

Explanation:

Step 1: Write the basic dissociation reaction for pyridine

C₅H₅N(aq) + H₂O(l) ⇌ C₅H₅NH⁺(aq) + OH⁻(aq)      Kb = 1.9 × 10⁻⁹

Step 2: Calculate [OH⁻]

For a weak base, we will use the following expression.

[OH⁻] = √(Cb × Kb) = √(9.2 × 1.9 × 10⁻⁹) = 1.3 × 10⁻⁴ M

Step 3: Calculate pOH

We will use the definition of pOH.

pOH = -log [OH⁻] = -log 1.3 × 10⁻⁴ = 3.9

Step 4: Calculate pH

We will use the following expression.

pH = 14 - pOH = 14 - 3.9 = 10.10

You might be interested in
Convert 5.00 moles of carbon to grams. Be sure to report your answer with the correct significant figures.
sergij07 [2.7K]

1 moles Carbon to grams = 12.0107 grams

2 moles Carbon to grams = 24.0214 grams

3 moles Carbon to grams = 36.0321 grams

4 moles Carbon to grams = 48.0428 grams

5 moles Carbon to grams = 60.0535 grams

6 moles Carbon to grams = 72.0642 grams

7 moles Carbon to grams = 84.0749 grams

8 moles Carbon to grams = 96.0856 grams

9 moles Carbon to grams = 108.0963 grams

10 moles Carbon to grams = 120.107 grams

8 0
3 years ago
How many atoms are in four molecules of oxygen gas ​
Dmitrij [34]

Answer:

8 oxygen atoms

Explanation:

One molecule of oxygen gas has two oxygen atoms (O2). If there are four molecules, then we multiply two by four to get 8 atoms.

8 0
3 years ago
1. When an ionic bond forms between magnesium (Mg) and bromine (Br), which of the following occurs?
AleksAgata [21]

The correct answers are:

1. B. Mg loses two electrons.

When Mg and Br combine, 2 atoms of Br attaches itself to Mg. The chemical reaction is:

Mg + Br ---> MgBr2

Since Br is more electronegative than Mg, then Mg loses an electron per Br therefore losing 2 electrons.

 

2. D. An atom that gains electrons must be attracted to an atom that loses electrons.

An ionic bond is formed when one molecule is more electronegative than the other molecule which results in gaining and losing of electrons. The more electronegative molecule gains electron while the less electronegative loses electron.

8 0
3 years ago
A centrifuge was used to separate a sample into its components. What conclusion about the sample can be formed based on the tech
Komok [63]

Its Homogenous Centrifuges are used to speed up the process of separating Homogeneous mixtures.

8 0
3 years ago
Read 2 more answers
What is concentration​
solmaris [256]

Answer:

In chemistry, "concentrated" refers to a relatively large quantity of substance present in a unit amount of a mixture. Usually, this means there is a lot of ​a solute dissolved in a given solvent. A concentrated solution contains the maximum amount of solute that can be dissolved.

Explanation:

5 0
4 years ago
Other questions:
  • Fast pls..,.,,..,,.,.,.
    14·2 answers
  • Some atoms are exceptions to the octet rule by having an expanded octet. Which characteristic is needed for an atom to have an e
    9·2 answers
  • Word Bank: automobiles, fossil fuels, plastic packaging, planes, trains _________________________ requires oil to create it.
    8·1 answer
  • In which process does a solid change directly into a vapor?
    9·1 answer
  • Pb(OH)2 + _HCI → __ H2O + _<br>PbCl2​
    6·1 answer
  • The total concentration of ions in a 0.75 M solution of HCl is
    15·1 answer
  • Which type of bond is present in hydrogen sulfide (H2S)? The table of electronegativities is given.
    10·1 answer
  • What do you call all water on earth surface
    7·1 answer
  • C. rubidium sulfate
    8·1 answer
  • Balance the equation <br><br> __Ni(CIO)3 → _NiCl2+ _02
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!