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
Lerok [7]
3 years ago
12

Calculate the entropy change when 4.31 g of H2 reacts with O2 according to the reaction

Chemistry
1 answer:
Mazyrski [523]3 years ago
8 0

Answer:

Explanation:

ΔG  =  Δ H - T ΔS

Given , ΔG = -237.2 kJ / mol

Δ H = - 285.8 kJ / mol

T = 298

Putting the values in the equation

-237.2 = - 285.8 - 298 x ΔS

ΔS  = .163 kJ / mole K

moles of water formed = 4.31 / 2 = 2.155

entropy change required = 2.155 x .163 kJ / K

= 351.26 J / K .

You might be interested in
Can you solve the anagrams
slamgirl [31]
Compound
Property
Molecule
Magnet
????
7 0
3 years ago
What volume would 3.01•1023 molecules of oxygen gas occupy at STP?
Sliva [168]
First, find moles of oxygen gas: (3.01 x10^23 molec.)/(6.02 x10^23) =0.5mol O2


Second, multiply moles by the standard molar volume of a gas at STP:(0.5mol)(22.4L) = 11.2L O2
6 0
3 years ago
Which will contain the greater number of moles of potassium ion: 30.0 ml of 0.15 m k2cro4 or 25.0 ml of 0.080 m k3po4?
Dahasolnce [82]
<span>30.0 ml of 0.15 m K2CrO4 solution will have more potassium ions. Let's see the relative number of potassium ions for each solution. Since all the measurements are the same, the real difference is the K2CrO4 will only have 2 potassium ions per molecule while the K3PO4 solution will have 3 potassium ions per molecule. K2CrO4 solution 30.0 * 0.15 * 2 = 9 K3PO4 solution 25.0 * 0.080 * 3 = 6 Since 9 is greater than 6, the K2CrO4 solution will have more potassium ions.</span>
3 0
3 years ago
9. Which indicator would show a pH change from 6 to 7?
expeople1 [14]

Answer:

hi

Explanation:

because

6 0
3 years ago
For an insoluble compound, how might you prevent formation of the precipitate
anastassius [24]
<span>protect it by covering it by lyophilic sol.</span>
8 0
3 years ago
Other questions:
  • Using what you have learned about the three forms of writing chemical equations, classify each of the presented equations as eit
    7·1 answer
  • Help plz plz plz plz plz plz plz plz plz plz plz plz plz
    12·1 answer
  • A microwave oven produces energy waves with wavelengths that are
    8·2 answers
  • Given: NaCl + AgNO3 -&gt; AgCl + NaNO3
    9·2 answers
  • Is air matter or energy
    15·2 answers
  • 8th grade science
    7·2 answers
  • What is the molar mass of Ca(OH)2?
    12·1 answer
  • What is the pH of a solution with a pOH of 13.75?
    10·1 answer
  • An elementary step is characterized by its _____, which is equal to the number of reactant particles in the step.
    5·1 answer
  • Which of the following statements are true of thermal energy and kinetic
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!