00:01
Hello everyone, in this question they have asked that how many amperes are required to deposit 0 .246 grams of magnesium metal in 751 seconds from the solution that contains magnesium 2 plus ions.
00:13
So here for that we have an equation i is equal to q upon t.
00:20
So here i is equal to current in ampere.
00:24
So that one we are going to find out here q is equal to charge, t is equal to time in seconds.
00:28
So here they have given time which is equal to 751 seconds.
00:34
But we don't know q.
00:36
So first here we are going to find out q that is charge.
00:39
Q is equal to n into f, where n is equal to number of moles.
00:44
So here we are going to find out number of moles.
00:46
So number of moles of magnesium metal is equal to mass of magnesium metal that one they have given that is 0 .246 grams upon molar mass of magnesium metal is 24 .31 gram per second.
01:01
So here grams, grams it cancelled, you will get number of moles which is equal to 0 .0101 mole...