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
tangare [24]
3 years ago
15

In a study of the conversion of methane to other fuels, a chemical engineer mixes gaseous CH4 and H2O in a 0.32-L flask at 1200

K. At equilibrium the flask contains 0.028 mol of CO, 0.084 mol of H2, and 0.045 mol CH4. What is [H2O] at equilibrium if Kc at this temperature is 0.26
Chemistry
1 answer:
inessss [21]3 years ago
8 0

Answer:

[H2O] = 0.0434 M

Explanation:

Step 1: Data given

Moles CH4 = 0.045 moles

Moles CO = 0.028 moles

Moles H2 = 0.084 moles

Volume = 0.32 L

Temperature = 1200 K

Kc = 0.26

Step 2: The balanced equation

CH4(g) + H2O(g) ⇆ CO(g) + 3H2(g)

Step 3: Calculate molarity at the equilibrium

[CH4] = 0.045 moles / 0.32 L = 0.141 M

[H2O] = ?

[CO] = 0.028 moles / 0.32 L = 0.0875 M

[H2] = 0.084 moles / 0.32 L = 0.263 M

Step 4: Calculate [H2O]

Kc = 0.26 = [CO][H2]³/[CH4][H2O]

0.26 = 0.0875*0.263³ / 0.141*[H2O]

0.26 = 0.0015917516125 / 0.141*[H2O]

0.141*[H2O] = 0.0015917516125 / 0.26 = 0.006122

[H2O] = 0.0434 M

You might be interested in
A certain protein was found to contain 0.292% manganese by mass. Determine the minimum molecular mass of the protein.
Lisa [10]
55u \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 0,292\%\\
x \ \ \ \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 100\%\\\\
x = \frac{55u*100\%}{0,292\%}\approx18835,62u
4 0
3 years ago
The sun is ____star
jeka94

The sun is a star.

If you were talking about that

7 0
2 years ago
Read 2 more answers
Read the scenario.
8_murik_8 [283]

The answer is C. 2 m/s

6 0
3 years ago
Read 2 more answers
Write the molecular formula of ferric oxide and calcium hydroxide by criss-cross method ​
irina [24]
<h3>Ferric Oxide:-</h3>

\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf Fe}\put(0,0){\bf -3}\put(4,3){\sf O}\put(4,0){\bf -2}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}

\\ \sf\longmapsto Fe_2O_3

<h3><u>C</u><u>a</u><u>l</u><u>c</u><u>i</u><u>u</u><u>m</u><u> </u><u>H</u><u>y</u><u>d</u><u>r</u><u>o</u><u>x</u><u>i</u><u>d</u><u>e</u><u>:</u><u>-</u></h3>

\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf Ca}\put(0,0){\bf 2}\put(4,3){\sf OH}\put(4,0){\bf -1}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}

\\ \sf\longmapsto Ca(OH)_2

4 0
3 years ago
Which equation shows a conservation of mass?
pychu [463]
(4) PCl5--> PCl3+ Cl2 is the correct answer because we both have 1 P atom and 5 Cl atoms on both sides, and thus the masses of the elements don't change.
Hope this would help~
8 0
3 years ago
Other questions:
  • Explain how chemical reactions apply to law of conservation of matter
    10·1 answer
  • Scientific predictions based on laws are formulated using:
    7·2 answers
  • A chemistry teacher has a 560-cm length of magnesium ribbon. For a class experiment, each student requires an 8.5-cm length of t
    7·1 answer
  • In each reaction box, place the best reagent from the list below. draw the intermediate compound.
    11·1 answer
  • Which of the following describes a chemical property of a metal?
    6·2 answers
  • Write the conventional, total ionic, and net ionic equations for Mg(s)+H2O(l)
    8·1 answer
  • g Increasing the number of unsaturations in a fatty acid ____________ the melting temperature of the fatty acid.
    12·1 answer
  • Is aluminum intensive or extensive
    11·2 answers
  • Calculate the molarity of a solution prepared by dissolving 13.0 g of Na2CrO4 in enough water to produce a solution with a volum
    14·1 answer
  • I really need help, i don’t understand this at all
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!