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
How many moles are there in 24.00 g of NaCl
Elis [28]

Answer:

The answer to your question is 0.41 moles

Explanation:

Data

moles of NaCl = ?

mass of NaCl = 24 g

Process

To solve this problem just calculate the molar mass of NaCl, and remember that the molar mass of any substance equals to 1 mol.

1.- Calculate the molar mass

NaCl = 23 + 35.5 = 58.5 g

2.- Use proportions and cross multiplication

               58.5 g of NaCl ------------------- 1 mol

               24.0 g               ------------------- x

                     x = (24 x 1) / 58.5

                     x = 0.41 moles

6 0
3 years ago
What is the product of the reaction between HCIO3 and KOH
NISA [10]

Answer:

The products are: KCl03 and H20.

Explanation:

The reaction between HC03 (chloric acid) and KOH (potassium hydroxide) is:

HC03  + KOH ----> KCl03 (KCl03 and H20) + H20 (water)

<em></em>

<em>The reaction is of the double displacement type (in this case parts of the reagents are exchanged, producing two generating new compounds).</em>

7 0
3 years ago
How many electrons can be held in the second orbital
mariarad [96]
Second orbital can hold 8 electrons

3 0
3 years ago
Read 2 more answers
Question 6 (1 point)
Morgarella [4.7K]

Answer:

question 6: winter solstice

question 7: rotation is when an object spins around its axis, revolution is when an object travels in a path around another

question 8: the rotational period is equal to the period of revolution for the moon

question 10: true

8 0
3 years ago
Fill in the blanks to complete the idea of the sentences. Write your answers on a separate sheet of paper.
tiny-mole [99]

Explanation:

thank you thank you thank you for the points

7 0
2 years ago
Other questions:
  • Which piece of evidence would suggest an unknown substance is an ionic compound
    15·2 answers
  • The solar wind can interact with Earth's magnetic field to create powerful electric currents that cause .......... near the pole
    7·1 answer
  • Which element could provide one atom to make an ionic bond with fluorine? (Hydrogen will not make ionic bonds easily, so do not
    8·1 answer
  • A motorcycle travels 823 meters in 20 seconds. What is the average speed? _____ m/s
    15·1 answer
  • The transfer of energy from place to place or particle by direct contact is what
    8·1 answer
  • The number of atoms of sulfur in 2.66 grams of sulfur
    10·1 answer
  • PLZZZZZZZ NEED FAST HELP. AND I WILL MARK U BRILLIANT
    15·1 answer
  • If 10 ml of orange juice has a mass of 5 g, what would the density of Orange
    13·1 answer
  • How can radiation be life-threatening and at the same time be useful in saving lives?
    15·1 answer
  • Why is there a discrepancy between a heat of reaction ob-tained from calorimetry and one obtained from bond energies?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!