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
aliina [53]
2 years ago
15

Calculate the concentration of all species in a 0.160 m solution of h2co3.

Chemistry
1 answer:
enot [183]2 years ago
8 0

             H₂CO₃ ⇔       HCO₃⁻   +     H⁺

I            0.160               0                 0

C            -x                  +x               +x

E          0.160-x          +x                +x

Ka1 = [HCO₃⁻][H⁺] / [H₂CO₃]

4.3 x 10⁻⁷ = x² / (0.160-x)   (x is neglected in 0.160-x = 0.160)

x² = 6.88 x 10⁻⁸

x = 2.62 x 10⁻⁴

             HCO₃⁻    ⇔            CO₃⁻²    +   H⁺

I          2.62 x 10⁻⁴               0                2.62 x 10⁻⁴

C          -x                            +x              +x

E       2.62 x 10⁻⁴ - x           +x              2.62 x 10⁻⁴ + x

Ka2 = [CO₃⁻²][H⁺] / [HCO₃⁻]

5.6 x 10⁻¹¹ = x(2.62 x 10⁻⁴ + x) / (2.62 x 10⁻⁴ - x)

x = 5.6 x 10⁻¹¹

Thus,

[H₂CO₃] = 0.160 - (2.62 x 10⁻⁴) = 0.16 M

[HCO₃⁻] = 2.62 x 10⁻⁴ - ( 5.6 x 10⁻¹¹) = 2.6 x 10⁻⁴ M

[CO₃⁻²] = 5.6 x 10⁻¹¹ M

[H₃O⁺] = 2.62 x 10⁻⁴ + 5.6 x 10⁻¹¹ = 2.6 x 10⁻⁴ M

[OH⁻] = 3.8 x 10⁻¹¹

You might be interested in
Synthesis of cholesterol takes place in the
aliina [53]
The small intestine i think :) hope that helps
7 0
2 years ago
A certain ore is 37.3% nickel by mass how many kilograms of this ore would you need to dig up to have 10.0g of nickel
jeka57 [31]
If the grade of the ore is 37.3% nickel, then the unknown quantity to get 10 grams of nickel is 0.373 x = 10 grams or x = 10/0.373=26.8 grams or 0.0268 kg needed to dig up to recover the 10 grams of nickel. At this grade of ore, 1 kilogram would yield 373 grams of nickel. 
7 0
3 years ago
What is the missing word. Please Help Me. Thank you!!
Gnoma [55]
Calcium Floride (Caf2)
Hope this helped =D
7 0
3 years ago
Read 2 more answers
Write two advantages and two disadvantage of hydrogen<br>​
kykrilka [37]
1.it is readily available since hydrogen is a basic earth element and it's very abundant.
2. It doesn't produce harmful emissions.
Disadvantages
1.it is expensive. It is expensive because it takes a lot of time to separate the element from others.
2.it is difficult to store. Even moving a tiny bit of hydrogen would be very expensive.
3. It is highly flammable. Since it is a very powerful source of fuel, hydrogen can be very flammable.
8 0
3 years ago
Africa’s largest lake is Lake __________.
Tresset [83]

Lake Victoria

Explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • When salt dissolves in water, what type of substance is formed? A heterogeneous mixture, because the different components are mi
    12·1 answer
  • What is evaporation? Describe what happens at the molecular level during evaporation.
    7·1 answer
  • Calculate the amount of heat needed to boil 159.g of water
    7·1 answer
  • Our good friend and pseudo scientist, homer simpson, attempts to analyze 300 mg of an unknown compound containing only c and h b
    12·1 answer
  • Compare and contrast the fine and coarse adjustment knobs on a microscope
    15·1 answer
  • Please help Which of the following is the SI unit used to measure length? a.kilogram b.liter c.meter d.Kelvin
    15·1 answer
  • Define atomic mass unit. The relative atomic mass of oxygen atom is 16. Explain its meaning.
    7·1 answer
  • When using the benedict's assay, which color would indicate the most reducing sugar present?
    12·1 answer
  • Which of the following is not a type of mechanical wave?
    14·2 answers
  • Nombre de la siguiente estructura de compuesto orgánico
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!