Compare these theoretical cell potential differences with those you actually measured and calculate the percentage error for each cell. Comment on pos- sible sources of error in your measurements Answer the following questions: 4.
a. For one pairing that initially gave a negative voltage reading, write the redox equation, identify the anode and cathode, and give the direction of flow of electricity in the external circuit.
b. What is the purpose of the KNO3 salt bridge?
c. A galvanic cell cannot generate electricity forever. List two chemical rea- sons you can think of for why a galvanic cell may go "dead.
Answers: 1
Chemistry, 21.06.2019 12:30
Given 7.65 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100% yield?
Answers: 3
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
Chemistry, 22.06.2019 16:00
Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.
Answers: 3
Chemistry, 22.06.2019 18:10
The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.
Answers: 1
Compare these theoretical cell potential differences with those you actually measured and calculate...
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