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3 years ago

What condition must be met for a battery to be rechargeable?

Chemistry

1 answer:

Neko [114]3 years ago

3 0

Answer:

D. The electrochemical reaction of the battery must be reversible.

Explanation:

The batteries are based on the production of an electric flux given by a redox reaction. This reaction is spontaneous and is thermodynamically favored.

Thus, when the reactants to the reaction are finished, the flow of current stops and ends. Therefore, when current is administered from another source, the reaction changes its direction and reagents that were previously consumed begin to occur. Therefore the condition for it to be rechargeable is that the reaction can go forward or backward, that is, it is reversible.

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Consider the following reaction at constant P. Use the information here to determine the value of Î”Ssurr at 355 K. Predict whet

Sloan [31]

The given reaction is as follows:

2NO (g) + O₂ (g) = 2NO₂ (g), ΔH = -114 kJ

It is known that dSsurr = -dHsys / T (Temp = 355 K)

So, dSsurr = - (-114 × 1000) / 355

dSsurr = +321.12 J/K

Hence, the value of dSsurr is +321.12 J/K

For a reaction to be spontaneous, dG<0,

Also dStotal = dSsys + dSsurr > 0

It is known that dG = dHsys - TdSsys,

Now let us assume,

dG<0

Also, dStotal = dSsys + dSsurr > 0

(-114 × 1000) - (355 × dSsys) <0

355 × dSsys > -114 × 1000

dSsys > -321

dSsys >dSsurr

dSsys + dSsurr > 0

dStotal > 0

Thus, the assumption is correct, and the given reaction is spontaneous. Hence, the final answer is Ssurr = +321 J/K reaction is spontaneous.

8 0

3 years ago

Amy performed an experiment in lab. She improperly mixed the chemicals, and an explosion of light, sound, and heat occurred. Whe

agasfer [191]

The answer is D transformed

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4 years ago

Which will most likely result if the levels of dissolved oxygen decrease in a body of water?

Lerok [7]

Answer:

B) Native fish species will begin to decrease in population size.

Hope it helps:D

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3 years ago

Read 2 more answers

Calculate the concentration (in m) of hydroxide ions in a solution at 25. 0 °C with a poh of 3. 58.

Reika [66]

The concentration (in M) of hydroxide ions in a solution at 25°C with a pOH of 3.58 is 2.6 × 10⁻⁴ M.

pOH is the measure of basic nature of a solution by evaluating the [OH⁻] concentration.

It is the negative logarithm of the hydroxide ion concentration.

Given,

pOH = 3.58

Temperature = 25°C = 298K

At 25°C, the relation of pOH and [OH⁻] concentration is as follows:

∴ pOH = -log [OH⁻]

⇒ 3.58 = -log [OH⁻]

⇒log [OH⁻] = -3.58

⇒ [OH⁻] = antilog (-3.58)

⇒[OH⁻] = 2.6 × 10⁻⁴ M

The concentration (in m) of hydroxide ions in a solution at 25.0 °C with a pOH of 3. 58 is 2.6 × 10⁻⁴ M.

Learn more about pOH here, brainly.com/question/17144456

#SPJ4

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2 years ago

Does electronegativity affect replacement reactions

Annette [7]

Answer: A single replacement reaction occurs when an elemental metal atom with a low electronegativity replaces another atom (usually a metal) in a compound. This is caused by a transfer of electrons from the less electronegative metal to the more electronegative atom.

Explanation: I hope this helps

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3 years ago