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
slava [35]
3 years ago
13

1) Recall the two written definitions of an oxidation-reduction reaction provided in our lessons. Which of these definitions is

Chemistry
1 answer:
elena55 [62]3 years ago
4 0

Answer:

A redox reaction in which a change of oxidation number of the reacting species occurs either by oxidation or by reduction which occur simultaneously and to the same extent during the reaction.

Silver atoms are oxidized while oxygen atoms are reduced by a loss of electrons and a gain of electrons respectively.

Explanation:

A redox reaction in which a change of oxidation number of the reacting species occurs either by oxidation or by reduction which occur simultaneously and to the same extent during the reaction.

In a redox reaction,the two reactions occurring simultaneously can be divided into two half reactions; an oxidation half-reaction and a reduction half-reaction.

The oxidation half-reaction involves losing electrons and thus an increase in oxidation number of the species being oxidized. Whereas, the reduction half reaction involves gaining electrons and thus, a reduction innthe oxidation number of the species being reduced.

The species which oxidizes another species is known as an oxidizing agent and isnitself reduced due to its accepting electrons from the species being oxidized. Th reducing agent reduces another species and is itself oxidized as it loses electrons to the oxidized agent.

In the given reaction as shown below:

4 Ag (s) + 2 H₂S (g) + O₂ (g) ---> 2 Ag₂S (s) + 2 H₂0 (g)

The reaction is a redox reaction as a change innthe oxidation number of the reacting species; both oxidation and reduction occurs simultaneously and to the same extent.

The metallic silver atoms, have an oxidation number of zero initially. However, each of the four moles of atoms give up one mole of a electrons each to become oxidized to silver (i) ions, Ag+.

On the other hand, molecular oxygen gas also having oxidation number of zero becomes reduced to oxygen ion, O²-. Each of the two moles of atom in the oxygen gas molecule accept two electrons each donated by the metallic silver atoms to become reduced to oxygen ion, O²-.

The oxidation numbers of hydrogen ion and sulfide ion do not change.

You might be interested in
What will be the cost of gasoline for a 4,700-mile automobile trip if the car gets 41 miles per gallon, and the average price of
NARA [144]
  • Answer:

<em> $ 434.40</em>

  • Explanation:

<em>41 miles ............ 1 gallon</em>

<em>4700 miles .......x gallon</em>

<em>x = 4700×1/41 = 114.63 gallons</em>

<em />

<em>114.63 gallons×$3.79 ≈  $ 434.40</em>

3 0
3 years ago
Read 2 more answers
How can radioactivity be used to help find the age of an object ?
gogolik [260]

Hope this answers your question Mariaduong159

Radiometric Dating. It's used to find the dates of ricks and other objects based on what the known decay rate of radioactive isotopes. Different forms of this method can also estimate the age of natural and man-made materials.

8 0
3 years ago
How many moles are in 8.32 x 1024 molecules of CO2.
Andrews [41]

Answer:

<h2>13.82 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{8.32 \times  {10}^{24} }{6.02 \times  {10}^{23} }  \\  = 13.820598...

We have the final answer as

<h3>13.82 moles</h3>

Hope this helps you

6 0
3 years ago
Which coefficients correctly balance the formula equation nh4no2(s)-&gt; n2(g) + h2o(l)?
horrorfan [7]
NH4NO2 > N2 + 2 H2O
8 0
2 years ago
Match the chemical with the statement that best describes the observed change in the rate of the reaction when the concentration
maria [59]

Answer:

Explanation:

When the amount of H2O2 is doubled while KI is kept constant, the rate of reaction doubles.

When the amount of KI is doubled and the amount of H2O2 is halved, the rate stays nearly constant.

2H2O2 (aq) → O2(g) + 2H2O (l) ------------- first order kinetics reaction.

Catalysts are KI, FeCl3 only, KCl is not a catalyst. Order: KI < MnO2 < Pb < FeCl3.

H2O2 + I– -> IO– + H2O (Step 1)

H2O2 + IO– -> I– + H2O + O2 (Step 2)

It can be seen that the iodine ion (provided by the KI solution) is a product as well as a reactant.

02(g)2Fe? (aq) + 2 H(a) 2 H 2 Fe3 (aq) H2O2(aq) + 2 Fe,Taq) H02(aq) 2 Fe (aq) 2 H (aq)

8 0
2 years ago
Other questions:
  • Isotopes exist because atoms of the same element can have different numbers of
    6·1 answer
  • Which best describes the relationships between subatomic particles in any neutral atom? * 1 point the number of electrons equals
    5·1 answer
  • Help science loook at pictureeee
    11·2 answers
  • Why should you label your plates on the bottom instead on the lid?
    14·1 answer
  • Hydrogen Cyanide, HCN, is a poisonous gas. The
    8·1 answer
  • ¿en que estado de agregacion se encuentra un cuerpo con forma y volumen propio?
    10·1 answer
  • Which of these is NOT a unit of pressure<br><br> psi<br> atm<br> mm<br> Torr
    5·1 answer
  • Which of these structures is found in all types of plant and animal cells
    10·1 answer
  • What is a paper clip, a colloid? solution? or a suspension?
    12·2 answers
  • which compound is soluble in excess ammonia solution. A. Copper (II) sulphate B. iron (II) chloride. C.Magnesium chloride. D. Ma
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!