00:01
So, in this question, we have to write the skeletal equations for this given reactions.
00:06
So these reactions are given in word, so we have to write the skeletal equation.
00:11
Now sodium carbonate, we know that, n .a .2, co3 in solid state, we will give sodium oxide that is, n .a2o in solid state, okay, n .a2o plus carbon dioxide, that is co2 in grams.
00:28
So this is the skeletal equation for this.
00:29
Similarly for the aluminum plus iodine so aluminum exists as simple al in solid plus iodine exists as i2 okay so when this combined they will give aluminum iodide okay that is ali3 if you need to balance the reaction okay to balance this we can do 3 here okay so it will 6 and we can do 2 here so the number of iodine is balanced now because here it is 6 here now for aluminum we will place 2 here.
01:01
So this is a balanced reaction.
01:03
Now this reaction is already balanced, okay? so no need to balance this.
01:07
Similarly for this, we can write iron 2 oxide that is feo, feo plus oxygen, oxygen is o2 in gaseousier state, will give iron 3 oxide.
01:19
So iron 3 means the iron nils positive 3 states plus 3 state.
01:26
So we can write iron 3 oxide as f2.
01:28
F .2 or 3...