In a galvanic cell, reduction occurs at the (name of electrode) the anode is the
ID: 975061 • Letter: I
Question
In a galvanic cell, reduction occurs at the (name of electrode) the anode is the (sign) electrode anions flow in solution toward the (name of electrode) electrons flow from the (name of electrode) to (name of electrode) What is the purpose of a salt bridge? Explain. How is the salt bridge prepared in this experiment? Experimental Procedure, Part C.1. A 1-mL pipet is used to transfer 1.0 mL of a 0.10 M CusO_4, solution to a 100-mL volumetric flask. The volumetric flask is then filled to the mark with deionized water. What is the molar concentration of die diluted solution? Show calculations expressing the concentration with the correct number of significant figures. Refer to Figure 32.2 and equations 32.8 and 32.9. What is the value of the cell constant? What is the [Cu^2+] if the measured cell potential is 0.96 V? What should be the cell potential if the [Cu^2+] is 1.0 times 10^-3 mol/L?Explanation / Answer
1.)
a.) cathode
b.) -- ( negative)
c.) cathode
d.) anode to cathode
2.)
a.)
The purpose of a salt bridge is not to move electrons from the electrolyte, rather to maintain charge balance because the electrons are moving from one half cell to the other. The electrons flow from the anode to the cathode.
b.)
Many things can be used as a salt bridge: a piece of string, cotton, or filter paper soaked in an electrolyte solution or an electrolyte solution in a gel such as agar. Occasionally, fritted glass (porous glass), though not a salt bridge, is used to connect two half-cells.
3.)
1 mL of 0.1 M CuSO4
No of moles of CusO4 = 1*0.1/ 1000 moles = 0.0001 M
Volume = 100 mL = 0.1 L
So, molar concentration = moles / Volume
= 0.0001/0.1
= 0.001 M
So, molar concentration of diluted solution is 0.001 M
4.) Figure is not given , so we can not answer the 4th part
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.