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3 years ago

13. When pentane undergoes complete combustion, the products are carbon dioxide and water.

Chemistry

1 answer:

Yuki888 [10]3 years ago

4 0

Answer:

i think c

Explanation:

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Using the following standard reduction potentials, Fe3+(aq) + e- → Fe2+(aq) E° = +0.77 V Ni2+(aq) + 2 e- → Ni(s) E° = -0.23 V ca

lina2011 [118]

<u>Answer:</u> The above reaction is non-spontaneous.

<u>Explanation:</u>

For the given chemical reaction:

$Ni^{2+}(aq.)+2Fe^{2+}(aq.)\rightarrow 2Fe^{3+}(aq.)+Ni(s)$

Here, nickel is getting reduced because it is gaining electrons and iron is getting oxidized because it is loosing electrons.

We know that:

$E^o_{(Fe^{3+}/Fe^{2+})}=0.77V\\E^o_{(Ni^{2+}/Ni)}=-0.23V$

Substance getting oxidized always act as anode and the one getting reduced always act as cathode.

To calculate the $E^o_{cell}$ of the reaction, we use the equation:

$E^o_{cell}=E^o_{cathode}-E^o_{anode}$

$E^o_{cell}=-0.23-0.77=-1.0V$

Relationship between standard Gibbs free energy and standard electrode potential follows:

$\Delta G^o=-nFE^o_{cell}$

As, the standard electrode potential of the cell is coming out to be negative for the above cell. Thus, the standard Gibbs free energy change of the reaction will become positive making the reaction non-spontaneous.

Hence, the above reaction is non-spontaneous.

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3 years ago

Which term refers to compounds that can form hydrates but do not contain water molecules?

Lerok [7]

The term that refers to compounds that can form hydrates but do not contain water molecules is anhydrous.

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Chemistryyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

mrs_skeptik [129]

Water is your answer!!!!!!!!!

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How many neutrons does beryllium have?

PilotLPTM [1.2K]

5.

i answerd this b4

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3 years ago

-3 × 4=? ....................

blagie [28]

Answer:

-12

Explanation:

a negative times a positive is negative

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4 years ago

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