equations

Moderators: Chem_Mod, Chem_Admin

alanaarchbold
Posts: 68
Joined: Fri Sep 28, 2018 12:27 am

equations

Postby alanaarchbold » Sun Jan 13, 2019 3:29 pm

For some of the homework questions, it would just say the molecules and not distinguish if they were reactants or products. This is stupid but how do we know which are reactants and which are products?

Hannah Pham 1D
Posts: 62
Joined: Fri Sep 28, 2018 12:19 am

Re: equations

Postby Hannah Pham 1D » Sun Jan 13, 2019 3:57 pm

You can tell what are reactants or products if you know the equation for the chemical reaction. If the problem doesn't just straight out give it to you, you can figure it out yourself based on context clues from the problem.

Vy Lu 2B
Posts: 59
Joined: Fri Sep 28, 2018 12:24 am

Re: equations

Postby Vy Lu 2B » Sun Jan 13, 2019 3:58 pm

The reactant side should have the arrow pointing towards the product side; in terms of equilibrium, regarding the double arrows, the left side is the reactant side and the right side is the product side.

Raquel Ruiz 1K
Posts: 30
Joined: Tue Nov 14, 2017 3:02 am

Re: equations

Postby Raquel Ruiz 1K » Sun Jan 13, 2019 4:07 pm

We can use the model equation of aA+bB <=> cC +dD to guide us. I believe chemical equations are written this way. Reactants are on the left( A and B) because they react with each other to create products which are on the right of the equation (C and D). C and D are products and A and B are reactants. If the question does not give you the equation and just a product like ammonia 2NH3 then we would have to figure out the reactants that make ammonia, like N2 + 3H2 <=> 2NH3 we know this because ammonia is composed of Nitrogen and Hydrogen so we just add them together. Hope this helps

Hilda Sauceda 3C
Posts: 76
Joined: Fri Sep 28, 2018 12:24 am

Re: equations

Postby Hilda Sauceda 3C » Sun Jan 13, 2019 4:59 pm

usually reactants are on the left and products on the write and when its not given to us straight forward we first have to figure out what the chemical equation is.

jocelyntzeng
Posts: 59
Joined: Fri Sep 28, 2018 12:18 am

Re: equations

Postby jocelyntzeng » Sun Jan 13, 2019 5:09 pm

you should be able to tell which one is a product if it is a mixture of two of the other molecules (if your question is regarding like hw only giving moeclues and no chemical equation)

005113695
Posts: 59
Joined: Fri Sep 28, 2018 12:15 am

Re: equations

Postby 005113695 » Sun Jan 13, 2019 7:07 pm

You would have to figure out the equation. Some equations are more familiar and you would be able to figure it out easily. For others, theres probably context or hints as to which are the reactants or products.

Ricardo Martin 1J
Posts: 63
Joined: Fri Sep 28, 2018 12:15 am

Re: equations

Postby Ricardo Martin 1J » Sun Jan 13, 2019 7:26 pm

You can find out by writing out the chemical equation.

Mercan Bayazit 4E
Posts: 18
Joined: Fri Sep 28, 2018 12:20 am

Re: equations

Postby Mercan Bayazit 4E » Sun Jan 13, 2019 7:40 pm

You need to write out the chemical reaction, sometimes they are given to you in the question, other times the wording of the question gives it away, like A and
B react to make C and D or something similar to that.

Jaqueline Monreal 2L
Posts: 57
Joined: Fri Sep 28, 2018 12:28 am

Re: equations

Postby Jaqueline Monreal 2L » Sun Jan 13, 2019 8:36 pm

Usually the reactant are on the right and the products on the left seen using the basic model equation Aa+Bb<->Cc+Dd

alanaarchbold
Posts: 68
Joined: Fri Sep 28, 2018 12:27 am

Re: equations

Postby alanaarchbold » Tue Jan 22, 2019 3:18 pm

I meant like it would just say you have molecule A, B, and C. How do you know the equation for that if they just tell you what they are? Like how do you know A and B form C or if C breaks down to form A and B?


Return to “Equilibrium Constants & Calculating Concentrations”

Who is online

Users browsing this forum: No registered users and 3 guests