Write electron configurations for each of the following. A. Cr, Cr2+, Cr3+ B. Cu, Cu+, Cu2+ C. V, V2+, V3+

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purplelizard459Lv1

6 Oct 2020

Write electron configurations for each of the following.

A. Cr, Cr²⁺, Cr³⁺

B. Cu, Cu⁺, Cu²⁺

C. V, V²⁺, V³⁺

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Which of the following is NOT an example of a reaction that takes place at the anode of an electrochemical cell?

	A.	Cu²⁺(aq) + 2e- â Cu(s)
	B.	Cu(s) â Cu²⁺(aq) + 2e-
	C.	Cr²⁺(aq) â Cr³⁺(aq) + e-
	D.	Ag(s) â Ag⁺ + e-

Consider a galvanic cell based on the following two half reactions at 277 K:

Cu2+ + 2 e- â Cu Eo = 0.34 V

Cr3+ + e- â Cr2+ Eo = -0.41 V

Which of the following changes will increase the potential of the cell?

Decreasing the concentration of Cr2+ ions in solution

Increasing the concentration of Cr2+ ions in solution

Increasing the mass of the copper electrode

Adding equal volumes of water to both half reactions

What are the electron configurations of Cu_(g), Cu⁺_(g), and Cu²⁺_(g)? How many unpaired electrons are there in each species?

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Write electron configurations for each of the following.

A. Cr, Cr²⁺, Cr³⁺

B. Cu, Cu⁺, Cu²⁺

C. V, V²⁺, V³⁺

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