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Margaret [11]
4 years ago
14

What is the oxidation half-reaction for this unbalanced redox equation? cr2o72– + fe2+ → cr3+ + fe3+ cr3+ → cr2o72– cr2o72– → cr

3+ fe3+ → fe2+ fe2+ → fe3+?
Chemistry
1 answer:
KatRina [158]4 years ago
4 0

Answer:

6Fe^2+(aq) -------> 6Fe^3+(aq) + 6e

Explanation:

The balanced oxidation half equation is;

6Fe^2+(aq) -------> 6Fe^3+(aq) + 6e

A redox reaction is actually an acronym for oxidation-reducation reaction. Since the both reactions are complementary, there can't be oxidation without reduction and there can't be reduction without oxidation.

The main characteristic of redox reactions is that electrons are transferred in the process. The number of electrons transferred is usually deduced from the balanced reaction equation. For this reaction, the balanced overall reaction equation is;

Cr2O7^2–(aq) + 6Fe^2+(aq) +14H^+(aq)→ 2Cr^3+(aq) + 6Fe^3+ (aq) + 7H2O(l)

It is clear from the equation above that six electrons were transferred. Thus six Fe^2+ ions lost one electron each in the oxidation half equation as shown in the balanced oxidation half equation above.

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Essay about how a drop of water can change states from a gas to a liquid to a solid and back to a gas throught the process of ev
Crank
That will be regarding the water cycle. Write about the importance of the water cycle, each state from evaporation, condensation, precipitation, and run off. How the water cycle affects weather, animals, and the environment.
3 0
3 years ago
Mercury has a density of 13.56 g/ml. What is the volume in L of 52 kg of mercury?
sweet [91]

Hello!

Given the density of mercury being 13.57 g/mL, and the mass of 52 kilograms, we need to find the volume.

To find the volume, we need to divide mass by density (V = m/d).

Notice that you are given 52 kilograms, but not grams. To convert kilograms to grams, you need to multiply it by 1000.

52 x 1000 = 52000 grams

With the correct measurements, we can find the volume.

V = 52000 grams / 13.56 grams/milliliter

V ≈ 3834.80826

Therefore, the volume of the mercury is about 3,834.81 mL.

5 0
4 years ago
How many protons, electrons, and neutrons does an atom with atomic number
sergey [27]

Answer:

protons : 10

electron : 10

neutron : 10

Explanation:

Protons will usually be the same as the electrons when its a <u>Atom</u> (when its a ion or covalent bond or simple bond they will most likely be different)

the atomic number represents protons and electrons

the mass number - the atomic number = neutron

8 0
3 years ago
How many atoms are there in two molecules of water?<br>a. 3<br>b.4<br>c.5<br>d.6<br>​
Zina [86]

Answer:

the answer is 4

Explanation:

your welcome lol

3 0
3 years ago
The analysis of a compound containing K, P and O showed 55 % K, 15 % P and 30 % O, set up the simplest empirical formula of this
Leokris [45]

Answer:

Empirical formula is K₃PO₄.

Explanation:

Given data:

Percentage of K = 55%

Percentage of P = 15%

Percentage of O = 30%

Empirical formula = ?

Solution:

Number of gram atoms of K = 55 / 39.098 = 1.41

Number of gram atoms of P = 15 /30.974= 0.48

Number of gram atoms of O = 30 / 15.999 = 1.88

Atomic ratio:

             K                      :          P                   :         O

           1.41/0.48            :       0.48/0.48        :       1.88/0.48

               3                     :           1                    :            4

K : P : O = 3 : 1 : 4

Empirical formula is K₃PO₄.

4 0
4 years ago
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