The purpose of this lab is to calculate a value for Avogadro’s number and compare it to the actual value for Avogadro’s number. Avogadro’s number will be determined by setting up an electrochemical cell to oxidize a copper electrode. The results of the amount of copper deposited and the average current used will be used to calculate a value for Avogadro’s number.
Techniques used:
In this experiment, different techniques will be used to collect the required data, such as taking the mass of the copper electrode on an analytical balance, preparing the electrodes, using LabQuest, and assembling an electrochemical cell, which includes setting up a DC power supply, an ohm resistor, a Vernier Current Probe, and two connecting wires.
Chemicals and Equipment used:
In this experiment, many different chemicals and equipment will be used to collect data. A copper strip and zinc strip are the main electrodes being tested in this experiment. 1 M will be used to soak the electrodes and to conduct a …show more content…
What is a Coulomb (C)? How do you calculate Coulombs using Amps (A) and seconds (s)?
A coulomb is “the SI unit for charge” (Tro). The coulomb is the “quantity of electricity transported in one second by a current of one ampere” (Coulomb). It is roughly equivalent to “6.24 x electrons” (Coulomb). To calculate coulombs using Amps (A) and seconds (s), one must multiply the amount of amps by the time in seconds (Electrosis).
2. What is the formula for % error? When should % error be used, and what does % error tell you?
The formula for percent error is x 100 % (Percent Error). Percent error should be used when you are comparing your experiment results to the results that are theoretical or are known. Percent error is a measure of accuracy. Percent error tells you how well you performed and executed the experiment. The smaller the percent error, the better the experiment was performed. A larger percent error hints that an error may have
Techniques used:
In this experiment, different techniques will be used to collect the required data, such as taking the mass of the copper electrode on an analytical balance, preparing the electrodes, using LabQuest, and assembling an electrochemical cell, which includes setting up a DC power supply, an ohm resistor, a Vernier Current Probe, and two connecting wires.
Chemicals and Equipment used:
In this experiment, many different chemicals and equipment will be used to collect data. A copper strip and zinc strip are the main electrodes being tested in this experiment. 1 M will be used to soak the electrodes and to conduct a …show more content…
What is a Coulomb (C)? How do you calculate Coulombs using Amps (A) and seconds (s)?
A coulomb is “the SI unit for charge” (Tro). The coulomb is the “quantity of electricity transported in one second by a current of one ampere” (Coulomb). It is roughly equivalent to “6.24 x electrons” (Coulomb). To calculate coulombs using Amps (A) and seconds (s), one must multiply the amount of amps by the time in seconds (Electrosis).
2. What is the formula for % error? When should % error be used, and what does % error tell you?
The formula for percent error is x 100 % (Percent Error). Percent error should be used when you are comparing your experiment results to the results that are theoretical or are known. Percent error is a measure of accuracy. Percent error tells you how well you performed and executed the experiment. The smaller the percent error, the better the experiment was performed. A larger percent error hints that an error may have