When the Pb²+ concentration is 2.45×104 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 0.507V. What is the Cr³+ concentration? 3Pb2+ (aq) + 2Cr(s) →3Pb(s) + 2Cr³+(aq) Answer: M

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When the Pb²+ concentration is 2.45×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is
0.507V. What is the Cr³+ concentration?
3Pb²+ (aq) + 2Cr(s)- →3Pb(s) + 2Cr³+ (aq)
Answer:
M
Transcribed Image Text:When the Pb²+ concentration is 2.45×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 0.507V. What is the Cr³+ concentration? 3Pb²+ (aq) + 2Cr(s)- →3Pb(s) + 2Cr³+ (aq) Answer: M
When the
Pb²+ concentration is 1.14 M, the observed cell potential at 298 K for an electrochemical cell with the following reaction is 1.154 V. What is
the
Mn²+
concentration?
2+
Pb²+ (aq) + Mn(s) → Pb(s) + Mn²+ (aq)
2+
Pb²+ (aq) + 2e¯¯ → Pb(s) Fre
(aq) + 2e¯ → Mn(s) E
Mn²+
red
2+
Mn²+] =
M
-0.126 V
-1.180 V
Transcribed Image Text:When the Pb²+ concentration is 1.14 M, the observed cell potential at 298 K for an electrochemical cell with the following reaction is 1.154 V. What is the Mn²+ concentration? 2+ Pb²+ (aq) + Mn(s) → Pb(s) + Mn²+ (aq) 2+ Pb²+ (aq) + 2e¯¯ → Pb(s) Fre (aq) + 2e¯ → Mn(s) E Mn²+ red 2+ Mn²+] = M -0.126 V -1.180 V
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