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Brut [27]
3 years ago
15

Melting can be best described as a process in which molecules

Chemistry
1 answer:
statuscvo [17]3 years ago
3 0
Melting can be best described as a process in which molecules gain enough kinetic energy to be able to pass to each other.
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What is the value of the equilibrium constant at 25 oC for the reaction between the pair: Ag(s) and Ni2+(aq) to give Ni(s) and A
rusak2 [61]

Answer: 3\times 10^{35}

Explanation:

The balanced chemical equation will be:

2Ag(s)+Ni^{2+}(aq)\rightarrow 2Ag^{+}(aq)+Ni(s)

Here Ag undergoes oxidation by loss of electrons, thus act as anode. Nickel undergoes reduction by gain of electrons and thus act as cathode.

E^0=E^0_{cathode}- E^0_{anode}

Where both E^0 are standard reduction potentials.

E^0_{[Ag^{+}/Mg]}=+0.80V

E^0_{[Ni^{2+}/Ni]}=-0.25V

E^0=E^0_{[Ni^{2+}/Ni]}- E^0_{[Ag^{+}/Ag]}

E^0=-0.25-(+0.80V)=-1.05V

The standard emf of a cell is related to Gibbs free energy by following relation:

\Delta G=-nFE^0

\Delta G = gibbs free energy  

n= no of electrons gained or lost  =?

F= faraday's constant

E^0 = standard emf

\Delta G=-2\times 96500\times (-1.05)=202650J

The Gibbs free energy is related to equilibrium constant by following relation:

\Delta G=-2.303RTlog K

R = gas constant = 8.314 J/Kmol

T = temperature in kelvin =25^0C=25+273=298K

K = equilibrium constant

\Delta G=-2.303RTlog K

+202650=-2.303\times 8.314\times 298\times logK

K=3\times 10^{35}

Thus the value of the equilibrium constant at 25^0C is 3\times 10^{35}

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True

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True is the ANSWER.

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<span>Dmitri Mendeleev's Periodic Law states that chemical and physical properties repeat themselves in groups of 8.</span>
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52.8  grams of fat would be contained in 0.97 lbs of ground beef

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How many different types of elements are there in acetone C3H6O?
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3

Explanation:

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