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
Westkost [7]
3 years ago
6

A student plans to add HCL to a solution containing pb(NO3)2 (aq). To determine how much Pb2+ will precipitate from solution whe

n the HCL is added, the student needs to know which of the following?A) Ka for HCLB) Ka for HNO3C) Ksp for PbCl2D) Keq for the reaction Pb2+ + 2e- <---> Pb
Chemistry
1 answer:
WINSTONCH [101]3 years ago
5 0

Answer:

Option C. Ksp for PbCl₂

Explanation:

The equilibrium constant that is established between a solid and its ions in a saturated solution is what is known as Ksp (solubility product). It is an equilibrium constant based on concentrations.

The concentrations must be equilibrium, that is, concentrations of the ions in a saturated solution. To be sure of such saturation it is convenient to form a precipitate.

The smaller the Kps, the more insoluble the salt

You might be interested in
What is the pH of a solution with an [H+] of (a) 5.4 x 10-10, (b) 4.3 x 10-5, (c) 5.4 x 10-7?
IgorLugansk [536]

Answer:

a. 9.2

b. 4.4

c. 6.3

Explanation:

In order to calculate the pH of each solution, we will use the definition of pH.

pH = -log [H⁺]

(a) [H⁺] = 5.4 × 10⁻¹⁰ M

pH = -log [H⁺] = -log 5.4 × 10⁻¹⁰ = 9.2

Since pH > 7, the solution is basic.

(b) [H⁺] = 4.3 × 10⁻⁵ M

pH = -log [H⁺] = -log 4.3 × 10⁻⁵ = 4.4

Since pH < 7, the solution is acid.

(c) [H⁺] = 5.4 × 10⁻⁷ M

pH = -log [H⁺] = -log 5.4 × 10⁻⁷ = 6.3

Since pH < 7, the solution is acid.

3 0
3 years ago
The mass of an atom may be found by adding the
Darina [25.2K]

Answer:

protons and neutrons

Explanation:

5 0
2 years ago
Without doing any calculations, match the following thermodynamic properties with their appropriate numerical sign for the follo
siniylev [52]

Answer:

∆H > 0

∆Srxn <0

∆G >0

∆Suniverse <0

Explanation:

We are informed that the reaction is endothermic. An endothermic reaction is one in which energy is absorbed hence ∆H is positive at all temperatures.

Similarly, absorption of energy leads to a decrease in entropy of the reaction system. Hence the change in entropy of the reaction ∆Sreaction is negative at all temperatures.

The change in free energy for the reaction is positive at all temperatures since ∆S reaction is negative then from ∆G= ∆H - T∆S, we see that given the positive value of ∆H, ∆G must always return a positive value at all temperatures.

Since entropy of the surrounding= - ∆H/T, given that ∆H is positive, ∆S surrounding will be negative at all temperatures. This is so because an endothermic reaction causes the surrounding to cool down.

3 0
3 years ago
a swimming-pool worker wants the pools pH to be 7.2. She comes by to test the water and finds that the pH is 6.2. What should sh
nikdorinn [45]
Add an alkaline compound to raise the pH to 7.2.
3 0
3 years ago
All of the following animals are adapted to living in the temperate zone EXCEPT:
Verizon [17]
It will be easier to answer if you show the choices.
8 0
3 years ago
Other questions:
  • Which organelle of a prokaryotic cell contains genetic information?
    14·2 answers
  • 20 points will favor answer Please guys i could really use some help on this question
    13·1 answer
  • Under which circumstances would electrons be most likely to be shared equally?
    7·1 answer
  • a 58.215 g sample of a pure metal is brought to 99.0c and added o 41.202 g of water at 21.5c in a calorimeter. if the metal and
    10·2 answers
  • Which electron configurations represent the first two elements in Group 17 (7A) of the Periodic Table?
    14·2 answers
  • Pls help me guys please please​ only 1 question choose
    7·1 answer
  • Once more i need help
    9·1 answer
  • The mass of an element is 27 and it's atomic number is 13. Give the composition of the nucleus of it's atom.
    14·1 answer
  • I have to get this done fast
    6·1 answer
  • Which of the following is not a type of energy
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!