At Westonci.ca, we make it easy to get the answers you need from a community of informed and experienced contributors. Experience the convenience of finding accurate answers to your questions from knowledgeable professionals on our platform. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.
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 choosing our platform. We're dedicated to providing the best answers for all your questions. Visit us again. We hope our answers were useful. Return anytime for more information and answers to any other questions you have. We're glad you chose Westonci.ca. Revisit us for updated answers from our knowledgeable team.
