CHEM 2201 Lecture 1: Ch. 1
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PLS only answer if you know what you're doing and if you are going to answer all of them, i got alot to do cuz of finals so i'd appreciate it if you answer them all correctly, thank you
1) Calculate the standard emf (electromotive force) for a voltaic cell whose cell reaction is represented by the balanced equation. 2) Calculate the standard cell potential for a galvanic cell whose cell reaction is represented by the balanced equation. St. Red. Pot. (V)
3) For the voltaic cell shown, calculate the standard cell potential.
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Match the statement to the correct answer. (Some reagents can be used more than once.) The flowchart along with the report sheets in experiment 5 should be very helpful.
A | 6M Nitric Acid (HNO3) |
B | Colbalt Nitrate (Co(NO3)2) |
C | Disodium EDTA (Na2EDTA) |
D | Aluminum Nitrate (Al(NO3)3) |
E | Zinc Nitrate (Zn(NO3)2 |
F | Barium Nitrate (Ba(NO3)2) |
G | 6M Hydrochloric Acid (HCl) |
H | OH-, CO32-, and PO43- |
I | Lead chloride (PbCl2(s)) |
J | 0.1M sodium carbonate (Na2CO3) |
K | NH4+(aq) and OH-(aq) |
L | Silver chloride (AgCl(s)) |
M | Anion |
N | Lead Nitrate (0.1M Pb(NO3)3) |
O | Silver Nitrate (AgNO3) |
P | Cation |
Q | 1M ammonium hydroxide (NH4OH) |
R | Na+, NO3-, and NH4+ |
S | None of the above |
A B C D E F G H I J K L M N O P Q R S This reagent is added fresh samples in test A3 where there was no reaction in tests A1 or A2.
A B C D E F G H I J K L M N O P Q R S Mixing AgNO3 and NaCl will produce what white precipitate.
A B C D E F G H I J K L M N O P Q R S This is the reagent added after 6M HCl during test B1.
A B C D E F G H I J K L M N O P Q R S Lead Nitrate (Pb(NO3)2) will combine with hydrochloric acid (HCl) to form what white precipitate?
A B C D E F G H I J K L M N O P Q R S In test A2 you add this reagent to the test where a precipitate was formed.
A B C D E F G H I J K L M N O P Q R S The name for a positively charged ion is....
Pls Pls only answer if you are going to answer all of them and not just one or two thanks i got alot in my hands cuz of finals, and don't have time to do them, Appreciate it, trust that they'll be right , I posted this once but they only did one instead of all six so yeah thanks
1) The electrochemical cell described by the balanced chemical equation has a standard emf of 0.35 V. Calculate the value (J) for the Wmax that the cell can do under standard conditions. Round your answer to 3 significant figures.
2MnO42-(aq) + 2Hg2+(aq) â 2MnO4-(aq) + Hg22+(aq)
St. Red. Pot. (V) | ||||
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Faraday's Constant | ||||
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2) The voltaic cell described by the balanced chemical reaction has a standard emf of 4.05 V. Calculate the equilibrium constant (Kc) for the reaction at 25 oC. Round your answer to 3 significant figures. F2(g) + Mn(s) â 2F-(aq) + Mn2+(aq)
St. Red. Pot. (V) | ||||
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Constants | ||||
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Faraday's Constant | ||||
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3) The voltaic cell described by the cell notation has an Eo of 0.68 V. Calculate the Wmax (kJ) the cell has done if 6.4700 mol of MnO4-(aq) (Molar Mass - 118.94 g/mol) reacts. Round your answer to 3 significant figures.
Pt(s) l VO2+(aq), VO2+(aq), H+(aq) ll H+(aq), MnO4-(aq) l MnO2(s) l Pt(s)
St. Red. Pot. (V) | ||||
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Faraday's Constant | ||||
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4) The galvanic cell described by the cell notation has an Eo of 1.23 V. Calculate the value (kJ) for the ÎGË of the cell. Round your answer to 3 significant figures.
Pt(s), H2(g) l H2O(l), OH-(aq) ll O2(g) l OH-(aq) l Pt(s)
St. Red. Pot. (V) | ||||
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Faraday's Constant | ||||
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5) The electrochemical cell described by the balanced chemical equation has a standard cell potential of -0.37 V. Calculate the value (kJ) for the standard free energy change of the cell. Round your answer to 3 significant figures.
Sn4+(aq) + 2Cu(s) â Sn2+(aq) + 2Cu+(aq)
St. Red. Pot. (V) | ||||
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Faraday's Constant | ||||
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6)The electrochemical cell described by the cell notation has an Eocell of 4.05 V. Calculate the maximum electrical work (kJ) the cell has done if 375.44 g of F2(g) (Molar Mass - 38.00 g/mol) reacts. Round your answer to 3 significant figures.
Mn(s) l Mn2+(aq) ll F2(g) l F-(aq) l Pt(s)
St. Red. Pot. (V) | ||||
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Faraday's Constant | ||||
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