Consider an electrochemical cell based on the following cell ...

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Question 1

Consider a voltaic cell based on the following cell reaction:
         Ni(s) + At₂(s) → Ni²⁺(aq) + 2At^– (aq)
Given that the standard cell emf is 0.55 V, what is the standard reduction potential for astatine? [E°(Ni²⁺/Ni) = –0.25 V]
◦ 0.80 V
◦ 0.30 V
◦ –0.30 V
◦ –0.80 V
◦ 0.43 V

Question 2

Consider an electrochemical cell based on the following cell diagram:
         Pt | Pu³⁺(aq), Pu⁴⁺(aq) || Cl₂(g), Cl^– (aq) | Pt
Given that the standard cell emf is 0.35 V and that the standard reduction potential of chlorine is 1.36 V, what is the standard reduction potential E°(Pu⁴⁺/Pu³⁺)?
◦ 2.37 V
◦ 1.01 V
◦ –1.71 V
◦ –1.01 V
◦ 1.71 V

[Jaclyn92G6]

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Wow, this really help

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Thanks for the timely response, appreciate it