ericiniguez36 ericiniguez36

14-04-2020
Chemistry

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Write a balanced half-reaction describing the oxidation of solid chromium to aqueous chromium(IV) cations.

Respuesta :

23-04-2020

Answer:

Cr(s) ⟶ Cr⁴⁺(aq) + 4e⁻

Explanation:

1. Write the skeleton half-reaction

Cr(s) ⟶ Cr⁴⁺(aq)

2. Balance charge

Add electrons to the side that needs them.

You have 4+ on the right and 0 on the left. You must add 4e⁻ to the right to balance the charge.

Cr(s) ⟶ Cr⁴⁺(aq) + 4e⁻

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