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
umka2103 [35]
3 years ago
12

An organic liquid is a mixture of methyl alcohol (CH3OH) and ethyl alcohol (C2H5OH). A 0.220-g sample of the liquid is burned in

an excess of O2(g) and yields 0.345 g CO2(g) (carbon dioxide). Part A Set up two algebraic equations, one expressing the mass of carbon dioxide produced in terms of each reagent and the other expressing the mass of sample burned in terms of each reagent.What is the mass of methyl alcohol (CH3OH) in the sample?
Chemistry
1 answer:
Artist 52 [7]3 years ago
7 0

Answer:

Mass of Methyl alcohol (or methanol) = 0.1403g

Explanation:

<u>Step 1:</u> Given data

Mass of Sample: ms = 0.220 g

Mass of CO2: m0 = 0.345 g

Mass of CH3OH = m1

Mass of C2H5OH = m2

Molar mass CO2 = 44.01 g/mole

Molar mass CH3OH = 32 g/mole

Molar mass C2H5OH 46.07 g/mole

<u>Step 2: </u>Tjhe balanced equation

2 CH3OH + 3 O2 = 2 CO2 + 4 H2O

C2H5OH + 3 O2 =2 CO2 + 3 H2O

------------------------------------------------------

2 CH3OH + C2H5OH + 6 O2 = 4 CO2 + 7 H2O

<u>Step 3:</u> Calculate mass

In the balanced equation we notice that , the amount of CO2 is related to the amount of the alcohols: Moles CO2 = 4

mass of CO2 = Molar mass CO2((mass CH3OH/ Molar mass CH3OH)+(mass C2H5OH/Molar mass C2H5OH))

mass of CO2 = 44.01 ((mass CH3OH/ 32.04) + (mass C2H5OH/ 46.07)

The sample has a mass of 0.220 g = mass CH3OH + mass C2H5OH

mass C2H5OH = 0.220G - mass CH3OH

This we will insert in the equation, so we will only have 1 unknown mass

0.345g = 44.01((m1/32.04) + (2(0.220-m1)/M2) )

<=> m1 = ((mCO2/44.01)-(2*0.22/46.07))÷((1/32.04)-(2/46.07))

Thus: m1 = ((0.345/44.01)-(2*0.220/46.07))÷((1/32.04)-(2/46.07))

Thus m1 = 0.1403 g  = Mass of CH3OH

Since m2=(ms-m1).

m2 = 0.220-0.1403 = 0.0797 g = Mass of C2H5OH

Mass of methyl alcohol (Methanol) = 0.1403g

Mass of ethyl alcohol (Ethanol) = 0.0797g.

You might be interested in
Data for CH3COOH(l) + C2H5OH(l) CH3COOC2H5(l) + H2O(l) balance were obtained at 100. The initial concentrations of the reagents
Sphinxa [80]

Answer:

Kc = 3.94

Explanation:

CH₃COOH(g) + C₂H₅OH(g) → CH₃COOC₂H₅(g) + H₂O(g)

Liquids aren't included in the equilibrium constant, but at 100°C, all four compounds are a gas.  So the equilibrium equation is:

Kc = [CH₃COOC₂H₅] [H₂O] / ([CH₃COOH] [C₂H₅OH])

Set up an ICE table for each row and calculate the value of Kc.  Then average the results.  (See picture.)

Kc ≈ (3.919 + 4.012 + 3.902) / 3

Kc ≈ 3.94

3 0
3 years ago
Helpppp me plzz....
Dmitry_Shevchenko [17]

2.a) warm air is lighter than cold air so thats why it's warmer upstairs than downstairs
3.d) Conduction<span> is the process by which heat energy is transmitted through contact with neighboring molecules</span> 
4.d) the lamp radiates heat throughout the plants 
4 0
3 years ago
1.
Mazyrski [523]

1)   {ca}^{2 + }  = cation \\ {br}^{2 - }  = anion

7 0
3 years ago
Read 2 more answers
PLLLLLLLZ HELP IS NEEDED ASAP I WOULD REALLY APPRECIATE IT
Lesechka [4]

Answer:

1)Reactants

2)Light

3)An item that can increase reaction rates

4)Reactants must collide with each other

Less molecules lower the chance for collisions

The more collisions there are the higher the reaction rate

5 0
3 years ago
How does the amount of space between particles differ in the ballon and helium cylinder
Ivanshal [37]
In a balloon there is a low pressure within the balloon. This means that the particles are more spaced out. Wheras in the cylinder they are under high pressure, meaning that the particles are much closer together!
8 0
3 years ago
Other questions:
  • If a solid line represents a covalent bond and a dotted line represents intermolecular attraction, which of these choices shows
    9·1 answer
  • Blank of water is a physical change because boiling the water is blank from a liquid to a gas
    5·2 answers
  • How many moles of ethylene can react with 12.9 l of oxygen gas at 1.2 atm in 297 k
    13·1 answer
  • Which statement correctly compares an atom of an alkali metal with an atom of the alkaline earth metal next to it on the periodi
    11·2 answers
  • Keeping the number of moles constant, what is the final pressure in atm if the temperature was cooled from -91.5°C to -239°C, th
    8·1 answer
  • If 20 ml of gas is subjected to a tempature change from 10 Celsius to 100 Celsius and a pressure change from 1 atm to 10 atm, th
    9·1 answer
  • Aluminum boils at 2467°C. Aluminum’s boiling point in Kelvin is 2194. True or False.
    7·2 answers
  • What happens when you mix two different items (gases or liquids) together when they have different densities?
    15·1 answer
  • Differentiate between homogenous and heterogeneous catalysis​
    13·1 answer
  • Write the chemical formula of the following compounds <br>​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!