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puteri [66]
3 years ago
15

How is an oxidation half-reaction written using the reduction potential chart? How is the oxidation potential voltage determined

?
Chemistry
2 answers:
insens350 [35]3 years ago
7 0
Oxidation  half  reaction  is  written   as    follows when  using  using  reduction potential  chart
example  when  using  copper  it is  written  as  follows
CU2+   +2e-  --> c(s)  +0.34v
 oxidasation  is the  loos  of  electron  hence copper oxidation  potential  is  as  follows
cu (s)  -->  CU2+   +2e    -0.34v

Veronika [31]3 years ago
5 0

Answer:

Oxidation half reaction is the reverse of the reaction depicted in the chart and the oxidation potential will have the opposite sign relative to that in the chart

Explanation:

Redox reactions i.e. reduction-oxidation reactions generally involve transfer of electrons between two species.

Reduction half reaction involves the gain of electrons whereas oxidation half reactions involve the loss of electrons. For example

Oxidation: Loss of electrons

A\rightarrow A^{+} + e^{-}

Reduction: Gain of electrons

A^{+}+e^{-}\rightarrow A

A reduction potential chart gives the standard reduction potential of various species in terms of the reduction half reaction.

For example, in the case of Zn, the standard reduction potential value (E⁰) would be:

Zn^{+}+2e^{-}\rightarrow Zn       E0(reduction) =-0.76 V

The corresponding oxidation reaction and potential would be the reverse of the above reaction:

Zn\rightarrow Zn^{+}+2e^{-}        E0(oxidation) =+0.76 V

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If 20 grams of N2 react completely with H2 , how many moles of NH3 are produced? Show Work
Maslowich
This is the balanced eq
N2 + 3H2 -> 2NH3
first you need to find mole of N2 by using
mol = mass ÷ molar mass.
mol N2= 20g ÷ (14.01×2)g/mol
=0.7138mol
then look at the coefficient between H2 and NH3.
it is N2:NH3
1:2
0.7138:0.7138×2
0.7138:1.4276 moles
moles of NH3 = 1.4276 moles
5 0
3 years ago
How many g of MgCO3(s) are needed to make 1.2 L of 1.5 M MgCl2(aq) solution?
maw [93]
Molar mass of MgCO3 is 84.313 g/mol
You can calculate this from data on the periodic table:
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molar mass C = 12.011g/mol
molar mass O = 15.999g/mol mass 3 mol = 47.997g
Total = 84.313g/mol

Mass to be used in 1.2L of 1.5M solution = 84.313g * 1.2L * 1.5mol /L = 151.763g
I have not taken significant figures into account
The balanced equation you provide is not necessary in this calculation
4 0
3 years ago
Can u please help me I don't understand it and if I don't do it my teacher will get really mad at me pleas
Nana76 [90]

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Now, keeping in mind the definitions, we can easily classify the examples in the question as physical or chemical change.

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3 years ago
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elena55 [62]
I believe the answer is filtration.
5 0
3 years ago
Read 2 more answers
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GREYUIT [131]

Give 3 Examples of where potential energy was converted to knlinetic energy:

Curtain

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Hope this helps

Don't type or write in the answer, I'm not sure what from the lab means. These are a few potential into kinetic energy I could have think of!

4 0
2 years ago
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