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bonufazy [111]
1 year ago
11

What is e° cell for the reaction of nickel(ii) ions with cadmium metal at 25°c? ( r = 8. 314 j/k • mol, f = 96,500 c • mol –1) n

i2 (aq) cd(s) cd2 (aq) ni(s) k = 1. 17 × 105
Chemistry
1 answer:
Alexus [3.1K]1 year ago
5 0

At anode,

Cd----->  + 2

At cathode,

 + 2e -----> Ni

Overall reaction,

+ Cd(s) ------> + Ni                          K=1.17

(aq)                          (aq)      (s)

By nernst equation,

E=  -  Log K

Where,

          F=96500c/mol

         M=2

          T=298K

         E=Zero at equilibrium

R=8.314 J

0=  - Log(1.17)

= 0.150v

what is nernst equation?

The Nernst equation is a chemical thermodynamical relationship used in electrochemistry that enables the determination of a reaction's reduction potential (half-cell or full-cell reaction) from the standard electrode potential, absolute temperature, the number of electrons involved in the oxydo-reduction reaction, and activities (often approximated by concentrations) of the chemical species undergoing reduction and oxidation, respectively. It was given the equation's original name in honor of the German physical scientist Walther Nernst.

The link between cell potential, standard potential, and the behaviors of electrically active (electroactive) species is described by the Nernst equation. It links the standard cell potential to the effective concentrations (activities) of the reaction's constituent parts.

Learn more about nernst equation visit here:-

brainly.com/question/75084?referrer=searchResults

#SPJ4

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I hope this can help you

6 0
3 years ago
How does energy in a nuclear reaction get created?
nasty-shy [4]
My answer -

A nuclear reactor produces and controls the release of energy from splitting the atoms of uranium. 

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7 0
2 years ago
If the pressure on a gas at -73°C is doubled but its volume is held constant, what will its final temperature be in degrees Cels
Gre4nikov [31]

Answer:

127°C

Explanation:

This excersise can be solved, with the Charles Gay Lussac law, where the pressure of the gas is modified according to absolute T°.

We convert our value to K → -73°C + 273 = 200 K

The moles are the same, and the volume is also the same:

P₁ / T₁ = P₂ / T₂

But the pressure is doubled so: P₁ / T₁ = 2P₁ / T₂

P₁ / 200K = 2P₁ / T₂

1 /2OOK = (2P₁ / T₂) / P₁

See how's P₁ term is cancelled.

200K⁻¹ = 2/ T₂

T₂ = 2 / 200K⁻¹  → 400K

We convert the T° to C → 400 K - 273 = 127°C

4 0
2 years ago
How many standard amino acids are there in the human body?
Whitepunk [10]

Answer:

-Theres 20 amino acids in the human body

-The least number of amino acids in a polypeptide are 10

Explanation:

5 0
2 years ago
PLEASEEEE HELP :')
mel-nik [20]

Answer:

340 grams Ca₃P₂ (2 sig. figs.)

Explanation:

   3Ca     +     2P     =>    Ca₃P₂

5.6 mole + excess =>   ? grams

Convert the 'known' to a coefficient of 1 by dividing all coefficients by 3.

=>  Ca   +   2/3P   =>    1/3Ca₃P₂

From the above, 1 mole of Ca => 1/3 mole Ca₃P₂  

∴ 5.6 mole Ca in an excess of P => 1/3(5.6 mole) Ca₃P₂

=> 1.8666 mol Ca₃P₂ (calculator answer) ≅ 1.9 mol Ca₃P₂

=> 1.9 mole x 182 g Ca₃P₂/mol Ca₃P₂ = 339.73333 grams Ca₃P₂

≅ 340 grams Ca₃P₂ (2 sig. figs.)

7 0
3 years ago
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