Westonci.ca is your trusted source for finding answers to all your questions. Ask, explore, and learn with our expert community. Explore in-depth answers to your questions from a knowledgeable community of experts across different fields. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately.
Sagot :
Answer:
the mass of silver deposited when a current of 2.6 A is passed through a solution of silver salt for 70 minutes is approximately 0.0029 grams.
Explanation:
To find the mass of silver deposited, we can use the formula provided and the given data. The formula given is:
Mass of substance deposited
=
×
RAM
×
Mass of substance deposited=
F×Z
u×RAM
Where:
u is the current in amperes (A)
RAM is the relative atomic mass of silver (Ag), which is approximately 107.87 g/mol
F is Faraday's constant, which is approximately
96485
C/mol
96485 C/mol
Z is the number of electrons transferred per ion, which for silver ions (Ag⁺) is 1
Given data:
Current,
=
2.6
u=2.6 A
Time,
=
70
t=70 minutes =
70
×
60
70×60 seconds =
4200
4200 seconds
Now, let's calculate step by step:
Calculate the total charge (Q) passed through the circuit:
=
×
Q=u×t
=
2.6
A
×
4200
s
Q=2.6 A×4200 s
=
10920
C
Q=10920 C
Convert charge (Coulombs) to moles of electrons:
Since 1 Faraday (
F) is equal to
96485
96485 C/mol,
Moles of electrons
=
Moles of electrons=
F
Q
Moles of electrons
=
10920
C
96485
C/mol
Moles of electrons=
96485 C/mol
10920 C
Moles of electrons
≈
0.1132
mol
Moles of electrons≈0.1132 mol
Calculate the mass of silver deposited:
Now, using the formula:
Mass of silver deposited
=
×
RAM
×
Mass of silver deposited=
F×Z
u×RAM
Mass of silver deposited
=
2.6
A
×
107.87
g/mol
96485
C/mol
Mass of silver deposited=
96485 C/mol
2.6 A×107.87 g/mol
Mass of silver deposited
≈
280.0622
96485
g
Mass of silver deposited≈
96485
280.0622
g
Mass of silver deposited
≈
0.0029
g
Mass of silver deposited≈0.0029 g
Therefore, the mass of silver deposited when a current of 2.6 A is passed through a solution of silver salt for 70 minutes is approximately
0.0029 grams.
Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. We're here to help at Westonci.ca. Keep visiting for the best answers to your questions.
