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AURORKA [14]
3 years ago
15

(ii) Electrons are supplied to the external circuit. How and where is this done? [2]

Chemistry
1 answer:
pentagon [3]3 years ago
7 0

Answer:

The electrons are supplied by the species getting oxidized. They move from anode to the cathode in the external circuit. The external battery supplies the electrons. They enter through the cathode and come out through the anode

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A compound whose water solution conducts electricity and turns phenolphthalein pink is
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Answer:

The compound is an <em>alkali</em>

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4 0
3 years ago
Which statement correctly relates two substances from this reaction?
Marta_Voda [28]

We have to know which two substances are related correctly.

The correct answer is: (C) H₃O⁺ is the conjugate acid of H₂O.

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Acid₁ + Base₂ ⇄ Conjugate Base₁ + Conjugate Acid₂

In the reaction H₂CO₃ + H₂O ⇌ H₃O⁺ + HCO₃⁻, H₂CO₃  is an acid because it releases H⁺ ion and converts to HCO₃⁻. Here HCO₃⁻ is the conjugate base of H₂CO₃ ( according Arrhenius theory).

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3 years ago
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