Question

. Медный анод массой 10г поставлен в электрохимическую ванну, через которую прохо-дит ток 2А. Через какое время анод полностью израсходуется на покрытие металлических изделий?

Answer 1

Через какое время анод полностью израсходуется на покрытие металлических изделий?

m=k*I*t=

t=m/kI=0.010/(3.3*10^-7 *2)=15151.51515151515 c = 4.2 час

m=10г=0.010 кг

k=электрохимический эквивалент меди=3.3*10^-7 кг/кл

I=2А

t= время

Answer 2

Calculation of Time for Anode Consumption

To calculate the time it takes for the copper anode to be completely consumed in the electrochemical bath, we need to consider the amount of charge passed through the circuit and the Faraday's law of electrolysis.

According to Faraday's law, the amount of substance consumed or deposited during electrolysis is directly proportional to the quantity of electricity passed through the circuit. The relationship is given by the equation:

Q = n * F

Where: - Q is the total charge passed through the circuit (in Coulombs) - n is the number of moles of substance consumed or deposited - F is the Faraday constant, which is equal to 96,485 Coulombs per mole of electrons

In this case, we have a copper anode with a mass of 10 grams. To determine the number of moles of copper consumed, we need to use the molar mass of copper, which is approximately 63.55 grams per mole.

n = m / M

Where: - n is the number of moles of copper consumed - m is the mass of copper (10 grams) - M is the molar mass of copper (63.55 grams per mole)

Let's calculate the number of moles of copper consumed:

n = 10 g / 63.55 g/mol

Using the given values, we can calculate the total charge passed through the circuit:

Q = n * F

Now, we know that the current passing through the circuit is 2 Amperes. The charge passing through the circuit per unit time is given by the equation:

Q = I * t

Where: - Q is the total charge passed through the circuit (in Coulombs) - I is the current (in Amperes) - t is the time (in seconds)

We can rearrange the equation to solve for time:

t = Q / I

Let's substitute the values and calculate the time it takes for the anode to be completely consumed:

t = (n * F) / I

Now, let's calculate the values and find the answer.