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
Alecsey [184]
3 years ago
12

I need help. Will mark brainliest

Chemistry
2 answers:
Ugo [173]3 years ago
8 0

Answer:

17. HC₂H₃O₂ + H₂O  ⇄  C₂H₃O₂⁻  +  H₃O⁺       Ka

          A             B             CB             CA              

18. H₂SO₄ + 2H₂O →  2H₃O⁺  +  SO₄⁻²

         A           B            CA           CB          

19. CO₃⁻² + H₂O ⇄  HCO₃⁻  +  OH⁻      Kb

      B             A          AC          BC  

20.  HCO₃⁻  + NH₃  ⇄  CO₃⁻²  +  NH₄⁺       Ka

           A           B           BC           AC

21.   NH₄⁺ + OH⁻   ⇄   NH₃  +  H₂O     Ka

         A         B            BC        AC  

Explanation:

The acetic acid release a proton to water, to produce acetate and hydronium.

This is a weak acid.

The sulfuric acid release 2 protons to water to produce sulfate and hydronium.

This acid is considered as strong, but it is only strong in the first dissociation. The second dissociation is weak, with a Ka.

Carbonate takes a proton from water, to become bicarbonate (In this case, the carbonate behaves as a base).

Bicarbonate release a proton to ammonia, to make ammonium and carbonate anion.

Amonium cation release a proton to the hydroxide to make ammonia and water.

exis [7]3 years ago
5 0

Answer:

See explanation

Explanation:

Step 1: Data given

Bronsted-Lowry says the following:

Acid dissociation: HX + H2O → H3O+ + X-

Base dissociation: B + H2O → OH- + HB+

HC2H3O2 + H2O →

HC2HO2 is acetic acid, it's a weak acid. (CH3COOH)

This will be following the reaction HX + H2O → H3O+ + X-

CH3COOH + H2O → CH3COO- + H3O+

H2SO4 + H2O →

H2SO4 is a strong acid

This will be following the reaction HX + H2O → H3O+ + X-

H2SO4 + H2O → HSO4- + H3O+

CO3^2- + H2O →

CO3^2_ is a conjugate base

This will be following the reaction B + H2O → OH_ + HB+

CO3^2- + H2O → HCO3- + OH-

HCO3- + NH3 →

HCO3- (known as bicarbonate) is the conjugate base of H2CO3, a weak acid, and the conjugate acid of the carbonate ion.

NH3 is a weak base

HCO3- + NH3 → CO3^2- + NH4+

NH4+ + OH- →

The hydrogen on the ammonium ion (NH4+) can go back to the hydroxide ion (OH-) to form NH3 and H2O (ammonia and water) again. In this case, because the ammonium ion is donating a proton, it is called a conjugate acid.

NH4+ + OH- → NH3 + H2O

You might be interested in
What is the density of a substance that weighs 340g and has a volume of 40cm3?
jeka94

Answer:

<h2>8.5 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{340}{40}  =  \frac{17}{2}  \\

We have the final answer as

<h3>8.5 g/cm³</h3>

Hope this helps you

5 0
3 years ago
PLEASE HELP!!! Which claim about the causes of air pollution and water pollution is true? A. the burning of fossil fuels causes
BaLLatris [955]

Answer:

the first one which is A

Explanation:

the burning of fossil fuels causes both air pollution and water pollution

3 0
3 years ago
Read 2 more answers
For each equation , write all possible mole ratios . A. 2HgO(s)&gt;2Hg(l)+O2(g) B. 4NH3(g)+6NO(g)&gt;5N2(g)+6H2O(l)
Dafna11 [192]

A) For balanced chemical equation: 2HgO(s) → 2Hg(l) + O₂(g).

1) Mole ratio 1: n(HgO) : n(Hg) = 2 : 2 (1 : 1).

2) Mole ratio 2: n(HgO) : n(O₂) = 2 : 1.

3) Mole ratio 3: n(Hg) : n(O₂) = 2 : 1.

B) Balanced chemical equation: 4NH₃(g) + 6NO(g) → 5N₂(g) + 6H₂O(l).

1) Mole ratio 1: n(NH₃) : n(NO) = 4 : 6 (2 : 3).

2) Mole ratio 2: n(NH₃) : n(N₂) = 4 : 5.

3) Mole ratio 3: n(NH₃) : n(H₂O) = 4 : 6 (2 : 3).

4) Mole ratio 4: n(NO) : n(N₂) = 6 : 5.

5) Mole ratio 5: n(NO) : n(H₂O) = 6 : 6 (1 :1).

6) Mole ratio 6: n(N₂) : n(H₂O) = 5 : 6.

3 0
3 years ago
Read 2 more answers
The energies of the bonds broken in a certain reaction are greater than the energies of the bonds formed. Which one of the follo
frosja888 [35]

Answer:

a. The reaction is endothermic.

Explanation:

The heat involved in a chemical reaction is given by the enthalpy change (ΔH), which is equal to the balance between the chemical bonds that are broken (release energy) and the chemical bonds that are formed (need energy):

ΔH ≅ bonds broken - bonds formed

If broken bonds > bonds formed ⇒ ΔH > 0 ⇒ endothermic reaction

Therefore, the reaction is endothermic (it requires energy).

4 0
2 years ago
Can someone help me with this please
never [62]

Answer: B. 1:2

Explanation: Beryllium and chlorine forms a binary ionic compound. Ionic compound is formed when a metal loses its electrons to a receiving non metal. Beryllium (metal) has two valence electrons while chlorine (nonmetal) has seven valence electrons, and so a beryllium atom has to give out its two valence electrons to attain a duplet stable structure while a chlorine atom will gain one electron to attain its stable octet structure. In the reaction between beryllium and chlorine, two atoms of chlorine have to accept the two electrons from one beryllium atom to attain their stable octet structure.

The formula of the compound formed is BeCl2.

3 0
3 years ago
Other questions:
  • 3CuCl2 + 2Al = 2AlCl3 + 3Cu using the molar ratio between the limiting reactant (aluminum) and the product copper, determine the
    9·1 answer
  • KF is a strong electrolyte, &amp; HF is a weak electrolyte. How are they different?
    9·1 answer
  • If D+2 would react with E-1, what do you predict to be the formula?
    9·1 answer
  • What element is in the 3 rd period and 7th family
    13·2 answers
  • Which of the following equations is balanced?
    11·1 answer
  • A substance undergoes a change.<br> Which statement indicates that the change was a chemical change?
    15·1 answer
  • If you start with 100 grams of hydrogen-3, how many grams will you have after 24.6 years?
    15·1 answer
  • Can someone answer these two separate questions pls ill give brainliest
    6·1 answer
  • Pls help me out with this question!
    13·1 answer
  • Which are charateristics of all metals
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!