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
kakasveta [241]
1 year ago
9

Balance the following skeleton reactions and identify the oxidizing and reducing agents:(b) Fe(CN)₆³⁻(aq) + Re(s) →\mathrm{Fe}(\

mathrm{CN})_{6}^{4-}(a q)+\mathrm{ReO}_{4}^{-}(a q) [basic]
Chemistry
1 answer:
photoshop1234 [79]1 year ago
6 0

The given chemical equation is:

Fe(CN)63-(aq) + Re(s)-> Fe(CN)64-(aq) + ReO4-(aq)

Consider oxidation half reaction and balance it first in acidic conditions:

Re-   > ReO4-

Add water on the left side to balance the O-atoms:

Re-  +4H20-  > ReO4-

Add protons on the right side to balance H-atoms:

Re-  +4H20-  > ReO4-+8H+

To balance the charge add electrons:

Re-  +4H20-  > ReO4-+8H+ 7e-------------(1)

Reduction half reaction: Fe(CN)63-(aq) -> Fe(CN)64-(aq)

Add electrons to balance the charge:

Fe(CN)63-(aq) -  +e- > Fe(CN)64- (aq)---------------(2)

Multiply equation(2) with seven :

7{Fe(CN)63-(aq) -  +7e-} > 7{Fe(CN)64- (aq)} ------(3)

Add (1) and (3)

7Fe(CN)63-(aq) -  +7e-} > 7{Fe(CN)64- (aq)}   +   Re-  +4H20-  > ReO4-+8H+ 7e-

Add 8OH- on both sides:7Fe(CN)63-(aq) -  +7e-} > 7{Fe(CN)64- (aq)}   +   Re-  +4H20-   + OH-  > ReO4-+8H+ 7e- +OH-

It becomes:

7Fe(CN)63-(aq)  + rE +8OH-->OH-  >7{Fe(CN)64- +    ReO4-+  4H20

This is the final equation in the basic medium.

Re(s) is oxidised. So it is the reducing agent.

Fe(CN)63- is reduced.It is the oxidising agent.

To know more about skeleton reactions questions

brainly.com/question/24225616

#SPJ4

You might be interested in
What is the formula for barium nitrate ?
brilliants [131]

Answer:

Ba(NO3)2

Explanation:

6 0
3 years ago
The equilibrium constant Kc for the reaction below is 0.00584 at a certain temperature. Br2(g) ⇌ 2Br(g) If the initial concentra
Vinil7 [7]

Answer:

Explanation:

Given that:

The chemical equation for the reaction is:

             Br2(g)    ⇌  2Br(g)

Initially  0.0345M  0.0416M

Q_C = \dfrac{[Br]^2}{[Br_2]} = \dfrac{(0.0416)^2}{(0.0345)}= 0.05016

Q_C =0.05016 >>> K_c(0.00584)

Thus, the given reaction will proceed in the  backward direction

 The I.C.E table is as follows:

                       Br2(g)    ⇌  2Br(g)

I               0.0345                 0.0416

C                 +x                        -2x

E             (0.0345+x)            (0.0416 -2x)

K_c = \dfrac{[Br]^2}{[Br_2]} = \dfrac{(0.0416-2x)^2}{(0.0345+x)} = 0.00584

= 0.00173056 - 0.0832x - 0.0832x + 4x² = 0.00584 (0.0345 +x)

= 0.00173056 - 0.166x + 4x² = 2.0148× 10⁻⁴ + 0.00584x

= 0.00173056 - 2.0148× 10⁻⁴ - 0.166x - 0.00584x + 4x²

= 0.00152908  - 0.17184x + 4x²

Solving by using Quadratic formula

x = 0.03038 or 0.0126

For x = 0.03038

At equilibrium

[Br₂] = (0.0345 + 0.03038) = 0.06488 M

[Br] =  (0.0416 -2(0.03038)) = - 0.01916 M

Since we have a negative value for [Br], we discard the value for x

For x = 0.0126

At equilibrium

[Br₂] = (0.0345 + 0.0126) = 0.0471 M

[Br] =  (0.0416 -2(0.0126)) = 0.0164 M

4 0
2 years ago
What are the two toxic byproducts of incomplete combustion?
Brums [2.3K]
Answer- C (water and carbon dioxide)
5 0
3 years ago
Which do you think could work to reduce air pollution and global warming
natka813 [3]
Recycling!! And also planting more trees.

Hope this helps!
5 0
3 years ago
3.
belka [17]

Answer:

3. Inverse 1. Direct

Explanation:

P- pressure

V - volume

T - temperature

P1*V1 / T1 = P2*V2 / T2 ...... (1)

That's the general gas law with the combined ideas of charles, boyle & lussac.

Whenever you are restricted as "constant" temperature, volume, or pressure...cancel them off of your equation.

in this case 3. is indirectly telling us to cancel the temperature (T).

so we'll be left w P1*V1 = P2*V2

now notice that any relation ship that is multiplied like the one above consists of inversely related quantities. & so we conclude that-

P & V are inversely proportional or have an inverse relationship.

similarly in 1. we'll cancel p off of the general formula (1)

to be left with V1/T1 = V2/T2

also note that quantities involved in division are directly related to each other & hence the answer.

5 0
2 years ago
Other questions:
  • Caco3 is an example of which type of material?
    7·1 answer
  • (please help ;-; 30 points)This is a diagram developed by Ejnar Hertzprung and Henry Russell that shows how the magnitude, tempe
    13·1 answer
  • What is changes in a chemical reaction
    10·1 answer
  • How many oxygen atoms are there in 5 molecules of Al2(SO4)?
    11·1 answer
  • N
    7·1 answer
  • What is this called? it might be sideways but it show look like a Y
    13·1 answer
  • Can someone plz help me? :(
    15·1 answer
  • In a laboratory, a student combines vinegar and baking soda into a beaker. The initial temperature is 28 degrees Celsius and the
    12·1 answer
  • Question 6
    8·1 answer
  • Consider these equations: 2S(s)+3O2(g)→2SO3(g) , ΔH=−792kJ 2S(s)+2O2(g)→2SO2(g) , ΔH=−594kJ 2SO2(g)+O2(g)→2SO3(g) , ΔH=? What is
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!