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
soldier1979 [14.2K]
2 years ago
5

Which of the following is an oxidation-reduction reaction? so2(g) h2o(l) right arrow. h2so3(aq) caco3(s) right arrow. cao(s) co2

(g) ca(oh)2(s) h2co3(l) right arrow. caco3(aq) 2h2o(l) c6h12o6(s) 6o2(g) right arrow. 6co2(g) 6h2o(l)
Chemistry
2 answers:
Gennadij [26K]2 years ago
7 0

The reaction which shows oxidation and reduction simultaneously is C₆H₁₂O₆(s) + 6O₂(g) → 6CO₂(g) + 6H₂O(l).

<h3>What are redox reactions?</h3>

Those reaction in which oxidation as well as reduction of substances takes place simultaneously will known as redox reactions.

  • SO₂(g) + H₂O(l) → H₂SO₃(aq)
  • CaCO₃(aq) → CaO(s) + CO₂(g)
  • Ca(OH)₂(s) + H₂CO₃(l)  CaCO₃(aq) + 2H₂O(l)

Above reaction are not the redox reactions as in these reaction oxidation and reduction simultaneously not takes place.

  • C₆H₁₂O₆(s) + 6O₂(g) → 6CO₂(g) + 6H₂O(l)

In the above reaction reduction of oxygen takes place as its oxidation state changes from 0 to -2, and at the same time oxidation of carbon takes place as its oxidation state changes from 0 to +4.

Hence correct option is (4).

To know more about redox reactions, visit the below link:
brainly.com/question/7935462

expeople1 [14]2 years ago
4 0

Answer:

correct option is (4).

Explanation:

You might be interested in
The type of radioactive particle that can be stopped by a sheet of paper is the
koban [17]
Answer is alpha particles
5 0
3 years ago
Look at the diagram of the atom. What will it change to during beta decay? A)An atom with 3 protons, 4 neutrons, and 3 electrons
GREYUIT [131]
D) An atom with 4 protons, 3 neutrons, and 3 electrons
5 0
3 years ago
Which of the following chemical formulas represents a common acid?
wariber [46]
HCI is one of the most common acids out of the following
5 0
3 years ago
If an isotope of uranium, uranium-235, has 92 protons, how many protons does the isotope uranium-28 have?
padilas [110]
92. A<span>ll </span>isotopes<span> of uranium have the same number of protons</span>
4 0
3 years ago
Estimate the enthalpy change for the combustion of one mole of acetylene, C2H2, to form carbon dioxide and water vapor. BE(C?H)
tia_tia [17]

Answer:

ΔH rxn =  -1010 kJ/molC₂H₂

Explanation:

To obtain the enthalpy change for a reaction from bond energies what we do is to make an inventory of the bonds broken and formed for the balanced chemical reaction:

C₂H₂ + 5/2O₂   ⇒   2CO₂ + H₂O

Bond Broken                                    Bonds Formed

2 C-H + 1 C≡C + 5/2 O=O                4C=O + 2 H-O

Enthalpy bonds broken:

2 mol (456 kJ/mol)+ 1 mol (962 kJ/mol) + 5/2 mol (499 kJ/mol)  =  3121.5 kJ

Enthalpy bond formed:

4 mol (802 kJ/mol) + 2 mol (462 kJ/mol) = 4132.0 kJ

ΔH rxn = H broken - H formed =  3121.5 kJ - 4132.0 kJ = - 1010  kJ (per mol C₂H₂ )

4 0
3 years ago
Other questions:
  • How do the valence electron configurations of alkali metals compared with each other?
    7·1 answer
  • HELP ASAP! TEST!!!! How do you lengthen a pattern piece? (Family and Consumer Science, sewing)
    8·1 answer
  • What is pure chemistry and applied chemistry ?
    9·1 answer
  • Why is an energy source needed in order to have a working electric circuit
    12·1 answer
  • Corrosion is what type of chemical change?
    14·1 answer
  • Determine the number of significant figures for each. a) 65.74 b) 60.009 c) 66_ d) 65.750
    5·1 answer
  • The initial temperature of three moles of oxygen gas is 32.5°C, and its pressure is 6.60 atm. (a) What will its final temperatur
    6·1 answer
  • Which two geographic features form as a result of continental-continetal convergent<br> plates?
    9·1 answer
  • How much iron(III) oxide is produced? Answer in units of g.
    8·1 answer
  • By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with certain speeds. When HI dis
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!