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
BabaBlast [244]
3 years ago
9

how would you write equation to show how buffers H2CO3 and NaHCO3 behave when (a) HCl is added and (b) NaOH is added.

Chemistry
1 answer:
Vlad1618 [11]3 years ago
8 0
<span>H2CO3 <---> H+ + HCO3-
NaHCO3 <---> Na+ + HCO3-

When acid is added in the buffer, the excess H+ of that acid reacts with HCO3- to form H2CO3, and due to this NaHCO3 dissociates into HCO3- to attain the equilibrium. and hence there is no net effect of H+ due to pH remain almost constant. when a base is added to the buffer, the OH- ion of base react eith H+ ion present in buffer, then to attain equilibrium of H+ ion, the H2CO3 dissociates to produce H+ ion, but now there is the excess of HCO3- due to which Na+ ion react with them to attain equilibrium of HCO3-. hence there is again no net change in H+ ion due to which pH remain constant.....</span>
You might be interested in
Read the following chemical equation. Mg(s) + H+ Cl− → Mg2+ Cl− + H2 What most likely happens during this reaction?
spin [16.1K]

Answer:

Magnesium loses two electrons.

Explanation:

  • As clear from the reaction Mg converted from <em>Mg(s) to Mg²⁺</em>, so Mg converted from the oxidation state (0) to (2+).

<em>∴ Mg losses two electrons.</em>

  • Cl⁻ remains as it is, so it is considered as a catalyst and neither loss nor gain any electrons.

<em>So, the correct choice is Magnesium loses two electrons.</em>

6 0
3 years ago
Read 2 more answers
Why is a bannana curved?
Yanka [14]

Answer:

Explanation:

It's because of the sun! Bananas are curved so they can retrieve sunlight.

7 0
3 years ago
Read 2 more answers
The chemical bond between which two atoms is most polar
masha68 [24]

Answer:

yes

Explanation:

6 0
3 years ago
A process uses 63,400 SCF/h of natural gas. What is the annual cost of natural gas used in the process?
artcher [175]

Explanation:

It is known that 1 SCF produces approximately 1000 Btu of thermal energy.

As it is not mentioned for how many hours the gas is used in this process. Therefore, we assume that the total number of hours natural gas used in this process are as follows.

        365 \times 24 = 8760 hours

Now, we will calculate the annual cost of natural gas used in the process as follows.

               8760 \times 63400

              = 555384000 SCF

Hence, annual cost of natural gas used in this process = loss of thermal energy

This will be equal to,  555384000 \times 1000

                           = 555,384,000,000 BTU

Thus, we can conclude that the annual cost of natural gas used in the process is 555,384,000,000 BTU.

4 0
3 years ago
During the fall season in North America daylight gradually?
Gala2k [10]

b, the sunlight decreases because the sun is tilted on an axis and towards the fall and winter times, it gets shorter

5 0
3 years ago
Other questions:
  • What is the number of valence electrons that most atoms prefer?
    15·2 answers
  • What is an ionic solution and how does it work in a battery?
    10·1 answer
  • Why is water a neutral substance
    6·2 answers
  • A 100.0-mL sample of 1.00 M NaOH is mixed with 50.0 mL of 1.00 M H2SO4 in a large Styrofoam coffee cup calorimeter fitted with a
    13·1 answer
  • The distance between two points on a map is 0.704 kilometers. What is the distance in meters?
    9·2 answers
  • 49 points! Will mark brainliest!
    11·2 answers
  • ASAP please answer correctly and I will mark brainliest
    14·1 answer
  • Platinum-189<br> What is the symbol
    13·1 answer
  • What volume of 0.555M KNO3 solution would contain 12.5 g of solute
    5·1 answer
  • Compounds of boron and hydrogen are remarkable for their unusual bonding (described in Section 14.5) and also for their reactivi
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!