## stoichiometric coefficients

Fdonovan 3D
Posts: 101
Joined: Sat Aug 17, 2019 12:16 am

### stoichiometric coefficients

For the reaction 3/2 O2 -> O3, why do we use the stoichiometric coefficient of 3/2? Would it still be correct if we multiply both sides by 2, or is that not the simplest form of the equation?

105311039
Posts: 107
Joined: Fri Aug 02, 2019 12:16 am

### Re: stoichiometric coefficients

the reaction is correct either way. You can multiply by 2 if you want.

MAC 4G
Posts: 121
Joined: Wed Sep 18, 2019 12:16 am

### Re: stoichiometric coefficients

Both are correct as mentioned above, and I don't think you'd lose points for having either. Typically we haven't really left coefficients in fractions, at least on exams and tests.

Caroline Zepecki
Posts: 101
Joined: Fri Aug 09, 2019 12:16 am

### Re: stoichiometric coefficients

It's correct whether in fraction or whole number form, because the equations we use relate the two in ratio form anyways.

MeeraBhagat
Posts: 95
Joined: Sat Aug 24, 2019 12:15 am

### Re: stoichiometric coefficients

The reason it was in fraction form was because the first step of the reaction wanted to be written to get exactly one mole of product just to make it simpler. Therefore, to make this happen, there needed to be 1/2(O2) as a reactant. If you had started with 1 mole O2 then you would end up with 2 moles O3 in the end.

Robert Tran 1B
Posts: 118
Joined: Thu Jul 11, 2019 12:15 am

### Re: stoichiometric coefficients

Either way works, but the reaction is written with the fraction so that the coefficient of the product is one.

WesleyWu_1C
Posts: 117
Joined: Thu Jul 25, 2019 12:16 am

### Re: stoichiometric coefficients

Sometimes you want one of the species in your equation to be 1 mol, which is why other species have fractions as coefficents.

Zoe Gleason 4F
Posts: 51
Joined: Tue Jul 23, 2019 12:15 am

### Re: stoichiometric coefficients

Either way is correct, but if you wanted to answer a question with one mol of O3, then you can use the reaction with 3/2 to make it simpler.

kevinolvera1j
Posts: 103
Joined: Fri Aug 02, 2019 12:15 am

### Re: stoichiometric coefficients

Using a fraction is useful if you only want the product to have 1 mol in your equations.