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Sergeeva-Olga [200]
3 years ago
6

Avoltic cell prepared using aluminium and nickle has the flowing cell notation ​

Chemistry
1 answer:
SpyIntel [72]3 years ago
5 0

Answer:

Al (s) | Al³⁺ (aq) || Ni²⁺ (aq) | Ni (s)

Explanation:

It seems that you meant "A voltic cell".

Here, Al (s) represents the solid anode while Al³⁺ is in aqueous phase, these two forms are separated by a solid line. || is the salt bridge while Ni²⁺ is in aqueous phase and is reduced on the nickel cathode that is Ni (s).

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Answer:

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How much energy is evolved during the formation of 197 g of Fe, according to the reaction below?
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Answer:

ΔH for formation of 197g Fe⁰ = 1.503 x 10³ Kj => Answer choice 'B'

Explanation:

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______

NOTE => If 2 moles Fe gives 852Kj (exo) as specified in equation, then a <u>higher energy value</u> would result if the moles of Fe⁰(s) is <u>higher than 2 moles</u>. The ratio of 3.638/2 will increase the listed equation heat value to a larger number because 197g Fe⁰(s) contains more than 2 moles of Fe⁰(s) => 3.527 mole Fe(s) in 197g.  Had the problem asked for the heat loss from <u>less than two moles Fe⁰(s)</u> - say 100g Fe⁰(s) (=1.79mole Fe⁰(s)) - then one would use the fractional ratio (1.79/2) to reduce the enthalpy value less than 852Kj.  

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