00:01
Here in this question we need to find out the mass of hydrogen peroxide that is h2o2 which is dissolved in that iteration required 12 .3 millilitra of kmno4 solution so we can find we can it is already given given fact that the molarity of kmno4 solution is 1 .68 molar and we know that molarity is can molarity which is equal to number of malls divided by volume in liter and it is the volume is which is already mentioned in the question itself therefore this molarity that is 1 .68 molar can be represented like this n divided by 0 .0143 liter so using this fact and using this value our 1 .68 which is equal to n by that is number of moss divided by 0 .0143 liter we can easily find out the number of moles as well so number of moles of kmno 4 which is equal to 0 .0 .0 .0.
01:16
And let's write the equation between kmno4 and h2 o2 plus h2 f04 gives o2 plus mn f04 plus k2 f04 plus 4 h2.
01:35
This equation is not balanced in order to balance this equation.
01:39
I'm going to put 2 in front of kmina4, 3 in front of h2sofo, 3 in front of oxygen, 2 in front of mnso, then 4 in front of h2.
01:51
I put that in the equation itself.
01:57
Now, from this relationship, from this equation, we can say that i go into the reaction 2 mall of kmano4.
02:06
Reacts with 1 mole of h2o2 then 0 .0 .0 .240 of k -manofo react with 1 .2 into 0 .040 moles of h2o2...