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
mart [117]
3 years ago
8

Antimony pentachloride decomposes according to this equation: SbCl5(g)⇌SbCl3(g)+Cl2(g) An equilibrium mixture in a 5.00-L flask

at 448 °C contains 3.85 g of SbCl5, 9.14 g of SbCl3, and 2.84 g of Cl2. How many grams of each will be found if the mixture is transferred into a 2.00-L flask at the same temperature?
Chemistry
1 answer:
hodyreva [135]3 years ago
7 0

Answer:

The mass of SbCl₅ in 2.00-L flask = 14.95 g

The mass of SbCl₃ in 2.00-L flask = 11.41 g

The mass of Cl₂ in 2.00-L flask = 3.55 g

Explanation:

Equation for the reaction is given as:

SbCl5(g)⇌SbCl3(g)+Cl2(g)

Equilibrium constant K__C = \frac{[SbCl_3][Cl_2]}{[SbCl_5]}

Let's calculate their respective number of moles; followed by their molar concentrations.

Since number of moles (n_x) = \frac{mass}{molarmass}

Therefore;

For SbCl₅(g)

mass given =3.85 g

molar mass = 299 g/mol

number of moles of SbCl₅(g) will be:

n__{(SbCL_5)} = \frac{3.85}{299}

n__{(SbCL_5)} = 0.0128 moles

For SbCl₃(g);

mass given = 9.14 g

molar mass = 228.13 g/mol

number of moles of SbCl₃(g) will be:

n__{(SbCL_3)} = \frac{9.14g}{228.13}

n__{(SbCL_3)} = 0.0400 moles

For Cl₂(g)

mass given  2.84 g

molar mass = 70.906 g/mol

number of moles of Cl₂(g) will be:

n__{(Cl_2) = \frac{2.84}{70.906}

n__{(Cl_2) = 0.0400 moles

Molar Concentration = \frac{number of mole}{volume}

Their respective molar concentration can be calculated as follows:

Molar Concentration for SbCl₅(g)

[SbCl₅(g)] = \frac{0.0128}{5.00}

= 0.00256

= 2.56 × 10⁻³ M

Molar Concentration for SbCl₃(g)

[SbCl₃(g)] = \frac{0.0400}{5.00}

= 0.008

= 8 × 10⁻³ M

Molar Concentration for Cl₂(g)

[Cl₂(g)] = \frac{0.0400}{5.00}

= 0.008

= 8 × 10⁻³ M

Again, we knew our Equilibrium constant K__C = \frac{[SbCl_3][Cl_2]}{[SbCl_5]}

∴

K__C = \frac{[8*10^{-3}][8*10^{-3}]}{[2.56*10^{-3}]}

K__C = 0.025

For the equilibrium mixture in 5.00 L  flask at 448°C; K__C = 0.025

∴ For 2.00 L;

Let (y) M be the concentration of SbCl₅(g), SbCl₃(g) and Cl₂(g)

∴

K__C = \frac{[y][y]}{[y]}

K__C = y

0.0025 = y

∴ For SbCl₅(g), SbCl₃(g) and Cl₂(g) in 2.00-L; their respective Molar Concentration is 0.025 M each.

So, since numbers of moles = \frac{mass}{molarmass}

mass = numbers of moles × molar mass

Also, numbers of moles = Molar Concentration × Volume

∴ mass = Molar Concentration × Volume × molar mass

For SbCl₅(g);

mass =  0.025 × 2 × 229g

= 14.95 g

For SbCl₃(g);

mass =  0.025 × 2 × 228.13

= 11.4065 g

≅ 11.41 g

For Cl₂(g):

mass = 0.025 × 2 × 70.906

= 3.5453 g

≅ 3.55 g

∴

The mass of SbCl₅ in 2.00-L flask = 14.95 g

The mass of SbCl₃ in 2.00-L flask = 11.41 g

The mass of Cl₂ in 2.00-L flask = 3.55 g

You might be interested in
I HAVE ANSWER
Agata [3.3K]
<span>11.2G is the answer to this problem.
</span>
7 0
3 years ago
Read 2 more answers
Reactions cannot occur without a certain minimum amount of energy. What is this minimum amount of energy called? A.the activatio
madam [21]
A. the activation energy 
7 0
3 years ago
Read 2 more answers
Robert leaves a chocolate bar in his car while attending school all day. When he goes to his car in the afternoon, the bar has c
attashe74 [19]
Substance change.
solid to a liquid
melting state when heat was applied.
3 0
3 years ago
Which number in a chemical formula tells you how many atoms of element you have
galina1969 [7]

Answer:it doesn’t

Explanation:

4 0
3 years ago
Read 2 more answers
Pls help me whit this pls
WITCHER [35]

Answer:

all cell arise from pre existing cell

Explanation:

6 0
3 years ago
Other questions:
  • 15 POINTS TO BEST ANSWERRRR
    8·1 answer
  • A student has a 2.19 L bottle that contains a mixture of O 2 , N 2 , and CO 2 with a total pressure of 5.57 bar at 298 K . She k
    10·1 answer
  • How many moles of atoms are there in 27g of aluminium
    9·1 answer
  • What are the two fundamental portions of an atom?​
    12·1 answer
  • A joule is a unit of _____. A. force B. work only C. energy only D. work or energy
    11·2 answers
  • Four forces are exerted on each of the two objects shown below:
    8·1 answer
  • A energia térmica corresponde à soma das energias cinéticas associadas a todas as partículas que compõem um corpo. Essa afirmati
    5·1 answer
  • If I have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 77 liters, and a temperature of
    9·1 answer
  • When an atom gains or loses electrons and has and does not have an equal number of
    5·1 answer
  • What is the amount in moles of a 52 g sample of aluminium fluoride, AIF3
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!