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
dlinn [17]
3 years ago
8

Which chemical equation represents a redox reaction?

Chemistry
2 answers:
svet-max [94.6K]3 years ago
8 0

Hello. This question is incomplete. The full question is:

"Which chemical equation represents a redox reaction? A. Mg(ClO3)2 + 2HCl → MgCl2 + 2HClO3   B. CO + H2O → H2 + CO2 C. 2NH4NO3 + CuCl2 → 2NH4Cl + Cu(NO3)2 D. Na2SO3 + FeBr2 → 2NaBr + FeSO3 "

Answer:

B. CO + H2O → H2 + CO2

Explanation:

The reactions that involve loss and gain of electrons are called oxide-reduction reactions. In the oxidation reaction, electrons are lost, while the reduction reaction consists of gaining electrons.

Oxidation can occur in three circumstances: when oxygen is added to the substance, when a substance loses hydrogen or when the substance loses electrons. Example: fruit salads tend to darken when they come into contact with air, this is because oxygen acts to promote fruit oxidation. A tip to avoid this is to add lemon or orange juice, as the vitamin C present in citrus fruits prevents the oxidizing action of oxygen on the salad.

Reduction, in turn, is the reverse and also occurs in three ways: when a substance loses oxygen, when it gains hydrogen or when it gains electrons. Example: when the copper oxide (black) is placed in an appropriate apparatus (chamber) for its reduction to occur, the hydrogen gas comes in contact with the super heated copper oxide and, as a result, it loses oxygen and gradually goes away. turning pink as it is being reduced to copper.

An example of a redox reaction is CO + H2O → H2 + CO2

noname [10]3 years ago
5 0

Answer:

Assign oxidation numbers to all atoms in the equation.

Compare oxidation numbers from the reactant side to the product side of the equation.

The element oxidized is the one whose oxidation number increased.

Explanation:

You might be interested in
Why are lager astronomical bodies such as planets and stars round?
Katyanochek1 [597]
Gravity pulls mass towards its center, therefore as matter is pulled towards a source of gravity it will naturally coalesce into a ball as matter competes to head towards the source of gravity.
5 0
3 years ago
Read 2 more answers
Select the correct answer.
sergejj [24]
D.) black text on a yellow background. There is much more contrast in the colors black and yellow than the other choices.
4 0
3 years ago
Read 2 more answers
Why is a high temperature needed to melt potassium iodide?
goldfiish [28.3K]
Potassium Iodide have a lot of strong bonds which requires a very high temperature (high energy) to break them and change into a different state of matter. 
4 0
3 years ago
Read 2 more answers
What are the correct coefficients when this equation is balanced?
larisa86 [58]

4, 3, 1

Explanation:

Sb has four on the right, so it needs four on the left. It's all alone, so <u>4</u>.

O2 comes in pairs, so you only need <u>3</u> of those to get six oxygens.

And 1 is the place holder for the right side since we got the left to match perfectly.

6 0
3 years ago
Grace wanted to find out the best conditions for growing lettuce plants.
Mariana [72]

Explanation:

the investigation lasts for 7 days !

hope this helps you.

8 0
2 years ago
Other questions:
  • Question 1 of 10
    11·2 answers
  • Which form of energy is non-renewable?<br> A. sunlight<br> B. fossil fuels<br> C. water<br> D. wind
    10·2 answers
  • 2. Oxygen can combine with carbon to form two compounds, carbon monoxide, and carbon dioxide. The ratio of the masses of oxygen
    5·1 answer
  • Consider sodium oxide, Na2O. Choose the best explanation for the subscript, 2, from the list provided.
    13·2 answers
  • If a liquid has a volume of 5800 mL and you need the mass in Liters, will the number appear to
    11·1 answer
  • All chemical reactions use reactants in a specific proportion or stoichiometry to form products. The __________ reactant regulat
    11·2 answers
  • Number 7 please fast answer
    15·2 answers
  • Calculate the mass in amu of 75 atoms of aluminum
    10·1 answer
  • The big bang theory states that​
    11·1 answer
  • Name this organic compound​<br>I don't need explaination just give the name
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!