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Inessa [10]
3 years ago
15

Which energy conversion must occur in an operating electrolytic cell?

Chemistry
2 answers:
Nitella [24]3 years ago
8 0

Answer: 1) electrical energy to chemical energy

Explanation: The reaction must be forced by applying an external electric current thus needing a supply of electric current.

Anon25 [30]3 years ago
7 0
I think the correct answer from the choices listed above is option 1. The energy conversion that must occur in an electrolytic cell is the conversion from electrical energy to chemical energy. The reaction must be forced by applying an external electric current thus needing a supply of electric current.
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A substance with a mass of 50.0 g has a temperature change of 40.0
grigory [225]

Answer:

Mass=50.0g

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c=670÷50×40

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2 years ago
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Which of the following would have the largest pKa?
garri49 [273]

Answer:

CH3CH2NH3+/CH3CH2NH2 would have the largest pKa

Explanation:

To answer this question we must know Kb of CH3CH2NH2 is 5.6x10⁻⁴, and for C6H5NH2 is 4.0x10⁻¹⁰. And the CH3CH2NH3+ and C6H5NH3+ are related with these substances because are their conjugate base. That means:

pKa of  CH3CH2NH3+ =  CH3CH2NH2;  C6H5NH3+ =  C6H5NH2

Also, Kw / Kb = Ka

Thus:

pKa of CH3CH2NH3+/CH3CH2NH2 is:

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pKa = 10.75

pKa of C6H5NH3+/ C6H5NH2 is:

Kw / kb = Ka = 2.5x10⁻⁵

-log Ka = pKa

pKa = 4.6

That means CH3CH2NH3+/CH3CH2NH2 would have the largest pKa

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