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
hram777 [196]
3 years ago
15

3) A saturated solution of PbCl2 in water was prepared and filtered. From the filtrate (solution collected after filtration), 50

0 mL was measured out into a beaker and evaporated to dryness. The solid PbCl2 residue recovered in the beaker amounted to 2.0 grams. a) Calculate the molar solubility of PbCl2. b) Calculate the solubility product constant, Ksp, for PbCl2
Chemistry
1 answer:
qaws [65]3 years ago
4 0

Answer: a) 0.0144mol/L

b) 1.19\times 10^{-5}

Explanation:

Solubility product is defined as the equilibrium constant in which a solid ionic compound is dissolved to produce its ions in solution. It is represented as K_{sp}

The equation for the ionization of the PbCl_2 is given as:

We are given:

Solubility of PbCl_2 = \frac{2.0g}{0.5L}=4g/L

Molar Solubility of PbCl_2 = \frac{4g/L}{278.1g/mol}=0.0144mol/L

1 mole of PbCl_2 gives 1 mole of Pb^{2+} and 2 moles of Cl^- ions

Solubility product of PbCl_2 = [Pb^{2+}][Cl^-]^2

K_{sp}=[0.0144][2\times 0.0144]^2

K_{sp}=1.19\times 10^{-5}

Thus the solubility product constant is 1.19\times 10^{-5}

You might be interested in
Jia observes that adding a solution of sodium hydroxide to a clear liquid turns the liquid pink. She makes a hypothesis about wh
Oksana_A [137]

The question is incomplete, the complete question is;

Jia observes that adding a solution of sodium hydroxide to a clear liquid turns the liquid pink. She makes a hypothesis about why the liquid changed color.

Which characteristic is least important for her hypothesis to have?

A)ability to be tested

B)based on the opinion of her classmates

C)ability to be proven incorrect

D)based on her current knowledge

Answer:

B)based on the opinion of her classmates

Explanation:

A hypothesis is a supposition or tentative explanation put forward based on minimal evidence. It sometimes sets the pace for further investigation.

Hypothesis is always based on empirical observation and not on popular opinion, hence the opinion of Jia's classmates is least important in Jia's formulation of a hypothesis.

3 0
3 years ago
Which of the following energy changes occurs as a bow is drawn and released?
Nuetrik [128]
<span>3. elastic potential to kinetic
</span>Mechanical energy is the top suject while it has two types: Kinetic energy which is the energy in motion and potential energy which is the energy in reserve. The measure of both energy in motion and reserve is called Joules. Joules then is the International System of Measurement unit for energy, this is mainly used to account for scaling energy in all aspects.<span> </span>
8 0
3 years ago
Read 2 more answers
Aluminum nitrate reacts with sodium hydroxide to form a precipitate of aluminum hydroxide. What mass of aluminum hydroxide will
lora16 [44]

Answer:

The mass of aluminum hydroxide that will precipitate when 35.5 mL of 0.145 mol/L aqueous aluminum nitrate is mixed with 44.2 mL of 0.215 mol/L aqueous sodium hydroxide is approximately 0.247 grams

Explanation:

The given parameters are;

The volume of 0.145 mol/L aqueous aluminum nitrate in the reaction = 35.5 mL

The volume of 0.215 mol/L aqueous sodium hydroxide in the reaction = 44.2 mL

The balanced chemical equation for the reaction is given as follows;

Al(NO₃)₃ (aq) + 3NaOH (aq) → Al(OH)₃ (s) + 3NaNO₃ (aq)

Therefore;

1 mole of Al(NO₃)₃, reacts with 3 moles of NaOH to form 1 mole Al(OH)₃, and 3 moles of NaNO₃

The number of moles of aqueous aluminum nitrate in the reaction = 35.5/1000 L × 0.145 mol/L = 0.0051475 moles

The number of moles of aqueous sodium hydroxide in the reaction = 44.2/1000 L × 0.215 mol/L = 0.009503 moles

Therefore, 0.009503 moles NaOH will react with 0.009503/3 moles Al(NO₃)₃ to form 0.009503/3 moles of aluminum hydroxide precipitate

The molar mass of aluminum hydroxide = 78 g/mol

Therefore, 0.009503/3 moles of aluminum hydroxide weighs 78 × 0.009503/3 = 0.247078 grams

The mass of aluminum hydroxide that will precipitate out ≈ 0.247 grams.

7 0
3 years ago
If 42.5 g N2 react with 10.1 g H2 according to the reaction below, how many grams of ammonia (NH3) can be produced, and how many
igor_vitrenko [27]
2N2+3H2>2NH3, H2=2.02g/mol, N2=28.02g/mol
42.5(1/28.02)(2/2)(17.04)
4 0
3 years ago
What is the formula for chlorine monobromide​
Aloiza [94]
CI- the chloride ion is the anion CI its formed when the elements gains electron or when a compound such as hydrogen chloride is dissolved in water or other polar solvents.
8 0
3 years ago
Other questions:
  • 6. What is the pressure of 0.60 moles of a gas if its volume is 10.0 liters at 35.0°C?
    9·1 answer
  • In the sentence "After conducting the science experiment,we recorded and analyzed the results," what does the word conducting me
    14·2 answers
  • What CPT code is reported for a percutaneous needle biopsy of mediastinum?
    13·2 answers
  • Jason has a balanced chemical equation and a rate law for a chemical reaction. What should he do to determine the overall order
    15·2 answers
  • For lunch, a patient consumed 3 oz of skinless chicken, 3 oz of broccoli, 1 medium apple, and 1 cup of nonfat milk (see Table 3.
    7·1 answer
  • How many molecules are there in 5.0g of C2H5OH?
    10·1 answer
  • If you determine the molar heat of neutralization for an acid is 49.1 kJ/mol and the accepted value is found to be 55.2 kJ/mol,
    8·1 answer
  • Two charged particles repel each other with a force of F.
    10·1 answer
  • Describe the functions of the proteins, carbohydrates and cholesterol.
    10·1 answer
  • Directions: Write the balanced equation for each of the following situations. SHOW ALL OF YOUR WORK ON ATTACHED PAGES, OR IT WIL
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!