Question

How many grams of tin metal will be deposited from a solution that contains Sn2+ ions if a current of 0.740 A is applied for 27.5 minutes. grams Submit Answer Retry Entire Group 9 more group attempts remaining

Answer 1

Answer:

Question1)

Given in question,

Current (I)= 0.740 A

Time (t)= 27.5minutes= 27.5×60= 1650 Sec

We have to calculate the mass of tin metal in grams.

Solution:

First of all we will find the charge,so

Q=I×t=0.74×1650

=1221 C

Now,

The no of moles of electron=(Q÷F)

Where F = 1 Faraday which is 96485 C

So,

=1221/96485=0.012 moles

TO FIND THE NO OF GRAMS WE HAVE TO MULTIPLY THE NO OF MOLES WITH MOLAR MASS OF TIN WHICH IS 118.7g/mole,hence

=0.012×118.7=1.42 g

hence the mass of tin metal deposited=1.42g.

Question2)

The 2nd question can be solved just like the 1st question and the ​​​​​​mass of copper metal deposited will be 1.09g.