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
sleet_krkn [62]
3 years ago
9

onsider the reversible dissolution of lead(II) chloride. P b C l 2 ( s ) − ⇀ ↽ − P b 2 + ( a q ) + 2 C l − ( a q ) PbClX2(s)↽−−⇀

PbX2+(aq)+2ClX−(aq) Suppose you add 0.2393 g of P b C l 2 ( s ) PbClX2(s) to 50.0 mL of water. When the solution reaches equilibrium, you find that the concentration of P b 2 + ( a q ) PbX2+(aq) is 0.0159 M and the concentration of C l − ( a q ) ClX−(aq) is 0.0318 M. What is the value of the equilibrium constant, Kc, for the dissolution of P b C l 2 PbClX2?
Chemistry
1 answer:
Sveta_85 [38]3 years ago
5 0

Answer:

9.34x10^-4

Explanation:

Step 1:

The balanced equation for the reaction.

PbCl2( s ) <=> Pb^2+(aq) + 2Cl^−(aq)

Step 2:

Data obtained from the question:

Mass of PbCl2 = 0.2393 g

Volume = 50mL

concentration of Pb^2+, [Pb^2+] = 0.0159 M

Concentration of Cl^-, [Cl^-] = 0.0318 M

Equilibrium constant, Kc =?

Step 3:

Determination of the number of mole PbCl2.

The number of mole of PbCl2 can be obtained as follow:

Molar Mass of PbCl2 = 207 + (35.5x2) = 278g/mol

Mass of PbCl2 = 0.2393 g

Number of mole =Mass /Molar Mass

Number of mole of PbCl2 = 0.2393/278 = 8.61x10^-4 mole

Step 4:

Determination of Molarity of PbCl2.

At this stage we shall obtain the molarity of PbCl2. This is shown below:

Mole of PbCl2 = 8.61x10^-4 mole

Volume = 50mL = 50/1000 = 0.05L

Molarity of PbCl2 =?

Molarity = mole /Volume

Molarity of PbCl2 = 8.61x10^-4/0.05

Molarity of PbCl2 = 0.01722 M

Step 5:

Determination of the equilibrium constant Kc.

PbCl2( s ) <=> Pb^2+(aq) + 2Cl^−(aq)

The equilibrium constant Kc for the equation above is given by:

Kc = [Pb^2+] [Cl^-]^2 / [PbCl2]

[Pb^2+] = 0.0159 M

[Cl^-] = 0.0318 M

[PbCl2] = 0.01722 M

Kc =?

Kc = [Pb^2+] [Cl^-]^2 / [PbCl2]

Kc = 0.0159 x (0.0318)^2/ 0.01722

Kc = 9.34x10^-4

You might be interested in
What is the Net Force?<br> 2N &gt;<br> 4N -<br> SN
maria [59]
The net force is SN haha
5 0
3 years ago
وزن الملي مكافئ لحامض الخليك​
Natalka [10]

Answer:

hshssytdtctdyeheb

Explanation:

yye6d66d6d6dududyydydydyehwj2

3 0
3 years ago
What kinda of water movement helps the fishing industry
Eddi Din [679]

Answer:

Upwelling is the natural process which brings cold, nutrient-rich water to the surface. A huge upwelling regularly occurs off the coast of Peru, which enjoys a large fishing industry as a result. Upwelling is a process in which currents bring deep, cold water to the surface of the ocean.

Explanation:

good luck

5 0
3 years ago
Pls help I’m in a test plssss
____ [38]

Answer:

6

Explanation:

6

5 0
3 years ago
Write down all the food chains that start with the blackberry and end with the hawk.
Roman55 [17]
Blackberry - rabbit - snake - owl - hawk<span>
</span>
6 0
3 years ago
Other questions:
  • Given the partial equation:
    9·1 answer
  • 1. ¿Cuál de las siguientes gráficas representa el movimiento rectilineo constante del
    8·1 answer
  • The universe cooled after the Big Bang. At some point, hydrogen atoms combined to form helium. What is this process called?
    7·2 answers
  • What does the law of conservation of matter/mass state
    13·2 answers
  • The equilibrium constant k for the synthesis of ammonia is 6.8x105 at 298 k. what will k be for the reaction at 375 k?
    5·2 answers
  • Which of these is a form of potential energy
    7·1 answer
  • What is the pH of a solution with a 4.60 × 10−4 M hydroxide ion concentration?
    9·2 answers
  • What type of elements make up a metallic bond
    6·1 answer
  • Rafa places some copper into a solution of sodium chloride. No reaction takes place. Using the displacement theory, explain why
    7·1 answer
  • Choose the statement that best describes the effect of temperature on atoms and molecules.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!