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
LiRa [457]
3 years ago
13

The compound trimethylamine, (CH3)3N, is a weak base when dissolved in water. Write the Kb expression for the weak base equilibr

ium that occurs in an aqueous solution of trimethylamine: Kb
Chemistry
1 answer:
Zina [86]3 years ago
7 0

Answer:

Kb = [OH⁻] . [C₃H₉NH⁺] / [ C₃H₉N ]

Explanation:

The equation for the reaction of trimethylamine when it is dissolved in water is:

C₃H₉N  +  H₂O ⇄ C₃H₉NH⁺ + OH⁻   Kb

1 mol of trimethylamine catches a proton from the water in order to produce trimethylamonium.

It is a base, because it give OH⁻ to the medium

Expression for Kb (Molar concentration)

Kb = [OH⁻] . [C₃H₉NH⁺] / [ C₃H₉N ]

You might be interested in
Which of the following are interactions between particles in a liquid
NikAS [45]

Answer:

van der Waals forces

hydrogen bonds

Explanation:

both are interactions

3 0
3 years ago
Student A correctly describes a chemical equilibrium is “reactant favored” and student B also correctly describes the same equil
Yakvenalex [24]
It’s B because student a comes after the a
4 0
2 years ago
2h3po4 + 3mg(oh)2 → mg3(po4)2 + 6h2o phosphoric acid, h3po4, is neutralized by magnesium hydroxide, mg(oh)2, according to the eq
Rina8888 [55]
The balanced equation for the neutralisation reaction is as follows
2H₃PO₄ + 3Mg(OH)₂ --> Mg₃(PO₄)₂ + 6H₂O
stoichiometry of H₃PO₄ to H₂O is 2:6
number of H₃PO₄ moles reacted - 0.24 mol
if 2 mol of H₃PO₄ form 6 mol of H₂O
then 0.24 mol of H₃PO₄ forms - 6/2 x 0.24 = 0.72 mol of H₂O
therefore 0.72 mol of H₂O are formed 
4 0
3 years ago
How many moles are in 7.6 g of Ca
klasskru [66]

Your answer would be 0.024951344877489 but rounding it would be 0.025 moles

7 0
3 years ago
The attractions that allow molecules of krypton to exist in the solid phase are due to:
OLga [1]

Answer:

4) Van der waals forces

Explanation:

Krypton (Kr) belongs to the noble gas group and has fully filled valence orbitals. In the solid phase, Kr exists as a white solid with a face centered cubic structure.

Intermolecular forces of attraction from the strongest to the weakest include:

Ionic > hydrogen bonding > dipole-dipole > london dispersion

Kr is monoatomic and non-polar. When fully filled (stable) valence orbitals of 2 Kr atoms approach each other in close proximity they experience a repulsive force which prevents the formation of strong bonds. Thus, the only force of attraction in Kr is the long range weak Van Der Waals force also known as the london dispersion force.

7 0
3 years ago
Other questions:
  • PLEASE ANSWER AS FAST AS YOU CAN I'M ON A TIME LIMIT...
    11·1 answer
  • The proton,neutron and electrons in the atom of the element represented by the symbol 231Y89 are:
    14·1 answer
  • A sample of milk kept at 25 °C is found to sour 40 times as rapidly as when it is kept at 4 °C. Estimate the activation energy f
    12·1 answer
  • A student makes a standard solution of sulfuric acid by taking 10.00 mL of a super-concentrated stock solution and diluting it t
    5·1 answer
  • Which is the most important question for deciding if a chemical reaction has occurred
    10·2 answers
  • Write a balanced net ionic equation for the following reaction. Explain how you arrived at this answer. What did you cancel out?
    9·1 answer
  • If you have 3.48 x 1023 formula units of Lead (II) Permanganate, what is its mass?
    10·1 answer
  • Which property is constant in the combined gas law?
    15·2 answers
  • Which describes the titration graph when a strong acid is titrated by a weak base?
    5·1 answer
  • Describe the pattern in melting point please!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!