Ammonia reacts with o2 to form either no or no2 according to...

Ammonia reacts with O2 to form either NO or NO2 according to the unbalanced equations shown below: NH3 + O2 → NO + H2O NH3 + O2 → NO2 + H2O In an experiment, 5 mol NH3 and 12.6 mol O2 are intially placed in a closed flask. After the reaction all the NH3 has reacted and 5.5 mol O2 remain. Calculate the number of moles of NO in the flask after reaction. Round your answer to two significant figures.

Transcript

00:01 Hello students, so here we have given that a number of mole of nh3 is equal to 5 mole, okay? then the number of mole of o2 is given here 12 .6 mole, okay? then number of mole of oxygen left, that is equal to 5 .5 mole.

00:28 So, the number of mole of oxygen consumed is given here 12 .6 minus 5 .5.

00:41 So it is 7 .1 mole.

00:44 Then again, the reaction is, let us x mole of oxygen consumed in the reaction.

00:53 X mole oxygen is consumed.

00:56 Just suppose it.

00:58 So 4 molecule of n h3 reacted with 5 molecule of o2 that give formation of 4 molecule of no and then 6 h2 okay, so as you can write that as 5 mole o2 react with 4 mole nh3 so it is x mole react with that 4x upon 5 mole okay so as a mole of n s 3 consumed ns 3 mole consumed it will mole of n o will be formed that is equal to the mole of n o will be formed then again as the so you can write that mole of n o formed is equal to 4x upon 5 you can write it simply in this form then we have given the other reaction that 4 molecule of n s 3 reacted with 7 o2 and it give formation of 4 molecule of n o2 and plus 6 molecule of h2 okay then here this amount is 7 .1 minus x then you can write that 7 mole oxygen react with 4 mole n h3 okay so you can write at 7 .1 minus x amount oxygen react with 4 by 7 and 7 .1 minus x so as mole of an o2 as mole of an o2 will equal to mole of n h3 consumed that is equal to 4 by 7 7 .7.

03:00 7 .1 minus x mole okay then the total mole of n h3 consumed total mole of n h3 consumed here is 4x upon 5 and plus 4 by 7 7 .1 minus x so you can write that 28x plus 142 minus 20x upon total it is 35 35 that is equal to 5...

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