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
borishaifa [10]
3 years ago
14

What is the pH of a 9.50×10−2 M ammonia solution??

Chemistry
1 answer:
Darina [25.2K]3 years ago
4 0
NH₃ + H₂O ⇄ NH₄⁺ + OH⁻

c=9,50*10⁻² mol/L

Ammonia solution is a weak electrolyte.
The dissociation constant of ammonium hydroxide is:
K=1.78*10⁻⁵

[OH⁻]=√(Kc)

pH=14-pOH=14+lg[OH]⁻
pH=14+lg(√(Kc))

pH=14+lg(√(1.78*10⁻⁵*9.50*10⁻²))=8.23
pH=8.23
You might be interested in
Will mark brainliest if solved correctly.
Kamila [148]

Answer:

The answers for the questions are in the picture.

6 0
3 years ago
Read 2 more answers
Embryos have the genes of
REY [17]

Answer:

gggggggg

Explanation:

4 0
3 years ago
Read 2 more answers
For the equilibrium
Mamont248 [21]

Answer:

Equilibrium concentrations of the gases are

H_2S=0.596M

H_2=0.004 M

S_2=0.002 M

Explanation:

We are given that  for the equilibrium

2H_2S\rightleftharpoons 2H_2(g)+S_2(g)

k_c=9.0\times 10^{-8}

Temperature, T=700^{\circ}C

Initial concentration of

H_2S=0.30M

H_2=0.30 M

S_2=0.150 M

We have to find the equilibrium concentration of gases.

After certain time

2x number of moles  of reactant reduced and form product

Concentration of

H_2S=0.30+2x

H_2=0.30-2x

S_2=0.150-x

At equilibrium

Equilibrium constant

K_c=\frac{product}{Reactant}=\frac{[H_2]^2[S_2]}{[H_2S]^2}

Substitute the values

9\times 10^{-8}=\frac{(0.30-2x)^2(0.150-x)}{(0.30+2x)^2}

9\times 10^{-8}=\frac{(0.30-2x)^2(0.150-x)}{(0.30+2x)^2}

9\times 10^{-8}=\frac{(0.30-2x)^2(0.150-x)}{(0.30+2x)^2}

By solving we get

x\approx 0.148

Now, equilibrium concentration  of gases

H_2S=0.30+2(0.148)=0.596M

H_2=0.30-2(0.148)=0.004 M

S_2=0.150-0.148=0.002 M

3 0
3 years ago
Why is ozone an important form of oxygen?
Anton [14]
Ozone is made up of 3 atoms of Oxygen and present in stratosphere of our atmosphere. It prevents us from "Ultraviolet rays" of Sunlight so it is an important form of oxygen or us

Hope this helps!
4 0
3 years ago
Срочно!!!!!!!помогите пожалуйста ​
Marizza181 [45]

Answer:

bsnsjwjjwjwjw

Explanation:

bsbsbsnsnsnsjs

8 0
3 years ago
Read 2 more answers
Other questions:
  • Click in the answer box to activate the palette. Use the half-reaction method to balance the following equation in acidic soluti
    8·1 answer
  • Why is eutrophication harmful to fresh water ?
    9·2 answers
  • Ethylene glycol (antifreeze) has a density of 1.11 g/cm3.
    13·1 answer
  • Can you help me solve these using "typical” metric conversions <br> (?/?)(?/?)
    11·1 answer
  • Identify three areas of energy research that scientists are working on today.
    5·2 answers
  • What is the degree of oxidation of a simple substance​
    11·2 answers
  • 4) In water, Vanillin, C8H8O3, has a solubility of 0.070 moles of vanillin per liter of solution at 25C. What will be produced i
    14·1 answer
  • PLEASE HELP QUICK!
    8·1 answer
  • C. When 4.46 moles of ethylene, C2H4, burns in oxygen to give carbon dioxide and
    10·1 answer
  • You are trying to make a sugar water solution by dissolving solid sugar into liquid water. You would like to increase (speed up)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!