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g How many electrons are transferred in the following reaction? (Please note that the reaction below needs to be balanced!) Mg (s) + Cr3+ (aq) → Cr (s) + Mg2+ (aq) How many electrons are transferred in the following reaction? (Please note that the reaction below needs to be balanced!) (s) + 3+ (aq) → (s) + 2+ (aq) 4 1 2 3 6

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Respuesta :

Answer: 6

Explanation:

Mg (s) + Cr3+ (aq) → Cr (s) + Mg2+ (aq)

Balancing the equation above we have,

3Mg (s) + 2Cr3+ (aq) → 2Cr (s) + 3Mg2+ (aq)

Half reaction

3Mg (s) → 3Mg2+ (aq) +6e-

2Cr3+ (aq) + 6e- → 2Cr (s)

Therefore six electrons were transferred (6e-)

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