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
ipn [44]
3 years ago
14

Find the Ka of nitrous acid given that a 0.20 M solution of the acid has a hydrogen ion concentration of 2.8*10-3 M. HNO2 (aq) ?

H+ (aq) + NO2- (aq)
Chemistry
1 answer:
Otrada [13]3 years ago
4 0

Answer:

3.92 x 10⁻⁵.

Explanation:

∵ [H⁺] = √(Ka.c)

∴ Ka = [H⁺]²/c = (2.8 x 10⁻³)²/(0.20) = 3.92 x 10⁻⁵.

You might be interested in
Which pair of atoms would form a covalent bond ?
Liula [17]
I think O and Cl will form covalent bonds since they are both non-metals and don't have a large enough difference in electronegativities to create an ionic bond.

I hope this helps.  Let me know if anything is unclear.
7 0
3 years ago
Read 2 more answers
What do kinetic and potential energy have in common
adell [148]
Just simply... they both are energy.
Use a bow and arrow as an example:
When you pull back an arrow, potential energy or PE is stored in the string and the limbs of the bow.
When you release the the arrow, energy is being transferred from the bow to the arrow. The arrow now has kinetic energy or KE, this means that the energy is being used by the arrow.
7 0
3 years ago
Using the periodic table, complete the following. Element: hydrogen symbol: H₂ Molecular weight: g Mass of one mole: g/mol
NNADVOKAT [17]

I think the mass is 88.54g/mol.

7 0
3 years ago
Read 2 more answers
Which type of orbit does the earth have with the sun ?
777dan777 [17]

Answer:

elliptical orbit

7 0
3 years ago
Please help me with 1 2 3 4
vazorg [7]

Answer:

ndndjdjndnd d

hbbg

Explanation:

though inc in djdjdbsuhwnwjsh72919th woop ow all all pa workbook ksdj

8 0
2 years ago
Other questions:
  • Write a nuclear equation to describe the neutron induced fission of Pu-239 to form Kr-89 and Ce-149 (this fission is induced by
    7·1 answer
  • Why are familiar objects such as pens and paper clips not commonly counted in moles?
    14·1 answer
  • What volume of oxygen at 423.0 K and a pressure of 127.4 kPa is produced by the decomposition of 129.7 g of BaO2 to BaO and O2?
    14·1 answer
  • How much heat is needed to raise the temperature of 55.0 g sample of water by 65.0 oC.
    10·2 answers
  • This figure (Figure 1)shows a container that is sealed at the top
    5·1 answer
  • Nomenclature for NaC2H3O2
    14·1 answer
  • The concentration of protein in a urine sample is calculated to be 2.77 μg/mL. What is the concentration of this solution in uni
    7·1 answer
  • A ______________________ is the distance from one compression to the next compression in a longitudinal wave.
    14·1 answer
  • Use the chemical equation below to determine how many moles of ammonia
    9·1 answer
  • What is the relative mass of an electron?<br> 1+<br> -1<br> 2<br> 0
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!