Question
Asked Nov 20, 2019
6 views
3. What mass of Fe is required to react with 455 mL of oxygen at 22 °C and a
pressure of 725 torr according to the following equation?
4 Fe (s) +3 O2 (g) 2 Fe2O3 (s)
46
help_outline

Image Transcriptionclose

3. What mass of Fe is required to react with 455 mL of oxygen at 22 °C and a pressure of 725 torr according to the following equation? 4 Fe (s) +3 O2 (g) 2 Fe2O3 (s) 46

fullscreen
check_circle

Expert Answer

Step 1

The gaseous state is the state of matter with least intermolecular force of attraction between molecules and highest kinetic energy. The standard properties of gases like Pressure, volume, and temperature can be calculated with the help of ideal gas equation.

The ideal gas equation can be written as:

help_outline

Image Transcriptionclose

P x V n x R x T Here P Pressure V volume T temperature R gas constant = 0.08314 L.atm/K.mol = moles of gas

fullscreen
Step 2

Pressure = 725 torr = 0.954 atm (1 atm = 760 torr)

Volume = 455 mL = 455 x 10-3 L

Temperature = 22C = 22 +273 = 295 K

Calculate number of moles of oxygen gas with the help of Ideal gas equation:

help_outline

Image Transcriptionclose

P x V n x Rx T 0.954 atm x 455x 103 L nx 0.08314 L.atm/K.mol x 295 K 0.954 atm x 455x 103 L 0.08314 L.atm/K.mol x 295 K 17.7 x103 moles n

fullscreen
Step 3

According to balance chemical equation:

4 mole...

help_outline

Image Transcriptionclose

4 moles Fe 17.7 x103 moles O2 -=23.6x103 moles Fe 3 moles O

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Other

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: A chemist measures the energy change AH during the following reaction: C3Hg(g)+502(g) 3 CO2(g)+4H20(...

A: The given reaction is shown below.

question_answer

Q: When gaseous sulfur dioxide is bubbled into a nitric acid solution, sulfuric acid and gaseous nitrog...

A: As no medium has been mentioned, I am considering acidic medium. In acidic medium this oxidation-red...

question_answer

Q: 3. Solid AGNO3 is slowly added to a solution that is 0.0010M in NaCl, NaBr and Nal. Calculate the [A...

A: For AgCl, the concentration of silver ion is calculated by,

question_answer

Q: Calculate the number of O atoms in 0.0985 g of  CaSO4 · 2H2O Help i have no idea how to solve this. ...

A: Given,0.0985 g of CaSO4. 2H2OMolar mass of CaSO4. 2H2O is 172.1712 g/mol.

question_answer

Q: Acetylene (C2H2) has a tendency to lose two protons (H+) and form the carbide ion (C22−), which is p...

A: The electronic configuration of carbon is 1s22s22p2, which contains 6 electrons in them.  C2 molecul...

question_answer

Q: On problem 2, how can i expect that Keq to be small or large for this reaction?

A: The equilibrium constant for this reaction will be used to determine the extent of the given reactio...

question_answer

Q: 4 NH3 (g) + 5 O2 (g) = 4 NO (g) + 6 H2O (g)A sample of NH3 is added to an initially evacuated 2.00 L...

A: Given that,Partial pressure of NH3= 415torrPartial pressure of O2 = (875-415) torr                  ...

question_answer

Q: Plsase help with question

A: Carbohydrates are biomolecules which are composed of certain monomer units, called as monosaccharide...

question_answer

Q: Calculate the percent by mass of methyl acetate in appointing solution around two significant digits

A: Given that,Boiling point of the solution = 95.7 CMass of methyl acetate = 50%Assume that mass of the...