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
natka813 [3]
2 years ago
12

11. Assuming that the gases are ideal, calculate the amount of work done (joules) in each of the following reactions at 25 degre

es Celsius. a. 4 HCl(g) + Ox(9) + 2Cl(g) + 2 H2O(g) b. 2 NO(g) → Na(g) + O2(g)
Chemistry
1 answer:
gayaneshka [121]2 years ago
3 0

<u>Answer:</u>

<u>For a:</u> Work done for the given reaction is 2477.572 J.

<u>For b:</u> Work done for the given reaction is 0 J

<u>Explanation:</u>

To calculate the work done for the reaction, we use the equation:

W=-P\Delta V

Ideal gas equation follows:

PV=nRT

Relating both the above equations, we get:

W=-\Delta n_gRT     ......(1)

where,

\Delta n_g = difference in number of moles of products and reactants = n_g_{(products)}-n_g_{(reactants)}

R = Gas constant = 8.314 J/K.mol

T = temperature = 25^oC=[273+25]K=298K

  • <u>For a:</u>

The chemical reaction follows:

4HCl(g)+O_2(g)\rightarrow 2Cl_2(g)+2H_2O(g)

\Delta n_g=4-5=-1

Putting values in equation 1, we get:

W=-(-1mol)\times (8.314J/K.mol)\times 298K=2477.572J

Hence, work done for the given reaction is 2477.572 J.

  • <u>For b:</u>

The chemical reaction follows:

2NO(g)\rightarrow N_2(g)+O_2(g)

\Delta n_g=2-2=0

Putting values in equation 1, we get:

W=-(0mol)\times (8.314J/K.mol)\times 298K=0J

Hence, work done for the given reaction is 0 J.

You might be interested in
The following balanced equation shows the decomposition of water (H2O). According to the equation, how many oxygen atoms are in
EleoNora [17]
2 atoms of oxygen are reactants.
6 0
2 years ago
Read 2 more answers
Bears and salmon have a predator - prey relationship . What would most likely happen to the bear population if the salmon popula
AlexFokin [52]
The population would grow and live easier.
7 0
3 years ago
Read 2 more answers
This is the elliptical orbit of the Earth around the sun. It takes 365.26 days to complete one orbit.
nydimaria [60]
Yes what is the question
5 0
3 years ago
Read 2 more answers
PLSSSSSSSSS HELP!!!!!!!! FIRST TO AWNSER GETS BRAINLIEST!!!!!!!!
katrin [286]

Answer:

measles are caused by virus

strep throat is caused by bacterium

aspergillosis caused by fungus

malaria caused by protist

hope this helps!

Explanation:

4 0
2 years ago
Read 2 more answers
6. Which of the following indicates that a chemical change has happened during cooking?
Crazy boy [7]

Answer: bubbles form in boiling water

Explanation:

5 0
3 years ago
Other questions:
  • Carbon exists in nature as three isotopes. Given the atomic masses and relative abundance of the isotopes, what is the average a
    14·1 answer
  • Which of the following is an example of chemical weathering?
    8·2 answers
  • What is the activation energy of a reaction whose rate constant doubles when the temperature is increased from 300K to 350K (ass
    7·1 answer
  • Name the SI base units that are important in chemistry, and give the SI units for expressing the following: (a)length, (b) volum
    13·1 answer
  • Based on the formulas, select the compounds that are covalent.
    15·2 answers
  • I really have no idea what to do here sorry. Help please.
    11·1 answer
  • How many valence electrons does this atom have? (Urgent plz help)
    12·1 answer
  • Plz help me I Am timed plz
    12·1 answer
  • Help :) For 100 points
    5·2 answers
  • Melissa wants to separate a mixture of many tiny beads that are all the same size. Some of the beads are made from pine wood and
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!