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
iren [92.7K]
3 years ago
5

Carbon tetrachloride, CCl₄, is a solvent that was once used in large quantities in dry cleaning. Because it is a dense liquid th

at does not burn, it was also used in fire extinguishers. Unfortunately, its use was discontinued because it was found to be a carcinogen. It was manufactured by the following reaction:
CS_2+3Cl_2 \longrightarrow CCl_4+S_2Cl_2
The reaction was economical because the byproduct disulfur dichloride, S₂Cl₂, could be used by industry in the manufacture of rubber products and other materials.
a. What is the percentage yield of CCl₄i if 719 kg is produced from the reaction of 410. kg of CS₂?
b. If 67.5 g of Cl₂ are used in the reaction and 39.5 g of S₂Cl₂ is produced, what is the percentage yield?
c. If the percentage yield of the industrial process is 83.3%, how many kilograms of CS₂ should be reacted to obtain 5.00 × 10⁴ kg of CCl₄? How many kilograms of S₂Cl₂ will be produced, assuming the same yield for that product?
Chemistry
1 answer:
Novay_Z [31]3 years ago
7 0

Answer:

The answers to the question are

a. Percentage yield  = 86.804 %

b. Percentage yield =92.2 %

c. 3.09×10⁶ kg of CS₂ should be reacted to obtain 5.00 × 10⁴ kg of CCl₄ at 83.3 % yield

c. (i) 4.39×10⁶ kg of S₂Cl₂ will be produced alongside at 83.3 %yield

Explanation:

a.To solve the question, we note that in the chemical reaction

1 mole of CS₂ reacts with 3 moles of Cl₂ to produce 1 mole of CCl₄ and 1 mole of S₂Cl₂

Mass of CCl₄ produced = 719 kg (Actual yield)

Mass of CS₂ in the reaction = 410 kg

Molar mass of CCl₄ = 153.82 g/mol,

Number of moles of CCl₄ =\frac{Mass}{Molar mass} = 719/153.82 = 4.674 moles

Molar mass of CS₂ = 76.139 g/mol

Number of moles of CS₂ =\frac{Mass}{Molar mass} = 410/76.139 = 5.385 moles

Therefore theoretical yield of CCl₄= 5.385 moles×153.82 g/mol

= 828.303 kg

Percentage yield = \frac{Actual Yield}{Theoretical Yield} *100 → \frac{719}{828.303} *100 = 86.804 %

b. Mass of the Cl₂ used in the reaction = 67.5 g

Mass of S₂Cl₂ produced =39.5 g (Actual yield)

Molar mass of Cl₂ = 70.906 g/mol

Number of moles of Cl₂ =67.5/70.906 = 0.952 moles

Molar mass of S₂Cl₂ = 135.04 g/mol

Number of moles of S₂Cl₂ =39.5/135.04 = 0.293 moles

However here  3 moles of  Cl₂ produces 1 mole of S₂Cl₂, therefore 0.952 moles of Cl₂ will produce 0.952/3 or 0.317 moles of S₂Cl₂

Therefore actual yield = 0.317 moles ×135.04 g/mol = 42.851 g

Percentage yield = 39.5/42.851×100 =92.2 %

c. To produce 5.00 × 10⁴ kg at 83.3 % yield

We have Percentage yield =   \frac{Actual Yield}{Theoretical Yield} *100, we have

Theoretical yield =  \frac{Actual Yield}{Percentage Yield} *100 = \frac{500*10^4}{83.3} *100 = 600.24 × 10⁴ kg

Number of moles of CCl₄ in 600.24 × 10⁴ kg of CCl₄ is given as

600.24 × 10⁷ g/153.82 g/mol, = 39022240.023 moles

Since 1 mole of CS₂ is required to produce 1 mole of CCl₄. then 39022240.023 moles of CS₂ is required to produce 39022240.023 moles of CCl₄ theoretically

mass of required CS₂ = Number of moles ×Molar mass of CS₂ = 39022240.023 moles  × 76.139 g/mol = 3088181053.204 = 3.09×10⁶ kg

Therefore 3.09×10⁶ kg should be reacted to obtain 5.00 × 10⁴ kg of CCl₄

Mass of 39022240.023 moles of  S₂Cl₂ is given by

39022240.023 moles × 135.04 g/mol = 5269563292.7466 g  which at 83.3 % yield gives 0.833 ×5269563292.7466 g = 4389546222.8579 g

= 4389546.2228579 kg = 4.39×10⁶ kg of S₂Cl₂

You might be interested in
What are 3 sentences about the history of Egypt? Thank you for taking aside time to answer this. Please answer this as quickly a
Nataly_w [17]
1) The history of egypt is still unclear; artifacts, how the pyramids were built, gods and whatnot.
2) Egypt's history being uncovered in regards to curses and amulets is still being practiced in the country and some others because of the great influence it had.
3) Egyptians being able to construct such grand structures that still stand (pyramids) serves as evidence that proves Egypt was a very advanced civilization at the peak of their advancement.
5 0
2 years ago
do you agree or not that evidence is only used to back scientific laws and provide evidence why or why not!!!!!! thank you, will
suter [353]

Answer:

yes, because evidence from scientifically research studies, is important because it lets us make decisions based on what works with studies of science we can know if this is right or not  

Explanation:

Hope i helped~  

4 0
2 years ago
How many grams are in 1.70 moles of Ca(NO3)2?
Andru [333]

The number of grams in 1.70 moles of Ca(NO₃)₂ is 384.2 grams

<h3>How to determine the mass of Ca(NO₃)₂</h3>

The mole of a substance is related to it's mass and molar mass according to the following equation:

Mole = mass / molar mass

With the above formula, we can determine the mass of Ca(NO₃)₂ as illustrated below:

  • Mole of Ca(NO₃)₂ = 1.70 moles
  • Molar mass of Ca(NO₃)₂ = 40 + 3[14 + (16 × 3)] = 40 + 3[14 + 48] = 40 + 3(62) = 40 + 186 = 226 g/mol
  • Mass of Ca(NO₃)₂ = ?

Mole = mass / molar mass

1.70 = Mass of Ca(NO₃)₂ / 226

Cross multiply

Mass of Ca(NO₃)₂ = 1.70 × 226

Mass of Ca(NO₃)₂ = 384.2 grams

Thus, the mass of 1.70 moles of Ca(NO₃)₂ is 384.2 grams

Learn more about mole:

brainly.com/question/13314627

#SPJ1

4 0
1 year ago
Which 3 are they?<br><br> (will mark brainliest)
Paraphin [41]

probably condensation and evaporation and freezing.. PROBABLY idk

8 0
3 years ago
If 0.094 moles of magnesium react with excess oxygen, how many moles of magnesium oxide would be formed?
VMariaS [17]

The equation for this reaction is

\text{Mg}+\text{O} \longrightarrow \text{MgO}

This means that for every mole of magnesium consumed, 1 mole of magnesium oxide is produced.

So, the answer is <u>0.094</u> moles.

6 0
1 year ago
Other questions:
  • Select all of the answers that apply. what are the two main ingredients in air? oxygen carbon dioxide nitrogen helium hydrogen
    10·2 answers
  • Five students performed a Kjeldahl nitrogen analysis of a protein sample. The following weight % nitrogen values were determined
    14·1 answer
  • A baseball is thrown a distance of 20 meters. What is its speed if it takes 0.5seconds to cover the distance
    10·1 answer
  • Please help with my 1.11 asignment and you get 20 points
    14·1 answer
  • Which is not an example of a vestigial structure
    15·2 answers
  • An example of a physical change is A) cooking an egg. B) folding paper into a frog. C) rusting iron in an old bicycle. D) reacti
    5·2 answers
  • Help with science----?????///
    15·1 answer
  • Homeostasis is the balance between your internal and external environments. We
    10·1 answer
  • If a substance has a density of 1.345g / mL , how many grams would the substance weigh if the sample has a volume of 22.1 ml?
    15·1 answer
  • Consider the synthesis of water as shown in Model 3. A container is filled with 10.0 g of H2 and 5.0 g of O2.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!