Moles

Sophia Dinh 1D
Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

Moles

When determining which side has more moles, do you account for the subscripts and the coefficients or just the coefficients?

Jason Wu 1E
Posts: 101
Joined: Thu Jul 25, 2019 12:15 am

Re: Moles

To determine which side has more moles to calculate which direction Le Chatelier's principle deviates yo, you just need the compare the total of the coefficient of the products to that of the reactants AFTER you balance the chemical equation. The reaction will favor the side with lesser moles if you decrease the volume by compression and the reaction will favor the side with more moles if you increase volume by expansion.

andrewcj 2C
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: Moles

Make sure you only count gaseous moles though, as liquids and solids are not noticeably affected by pressure changes to the equilibrium.

Brandon Valafar
Posts: 112
Joined: Sat Aug 17, 2019 12:16 am
Been upvoted: 1 time

Re: Moles

You only count the gas atoms first. Then, moles go based off of coefficients, not the subscript.

Sukanya Mohapatra 2G
Posts: 100
Joined: Sat Aug 17, 2019 12:18 am
Been upvoted: 1 time

Re: Moles

You only count the coefficients of gaseous molecules.

Isabella Dal Porto 1H
Posts: 100
Joined: Fri Aug 30, 2019 12:16 am

Re: Moles

Many gases are just diatomic molecules or a combination of different elements. This doesn't affect the number of moles. Thus, you only need to consider the coefficient to get the number of moles.

Vivianvelazquez_1J
Posts: 109
Joined: Thu Jul 11, 2019 12:17 am
Been upvoted: 1 time

Re: Moles

You only count gas molecules and their coefficients, not subscripts.

SimranSangha4I
Posts: 99
Joined: Sat Sep 14, 2019 12:17 am

Re: Moles

It's primarily focused on gas molecules and their coefficients.

sarahartzell1A
Posts: 56
Joined: Fri Sep 28, 2018 12:17 am

Re: Moles

Just the coefficients for gaseous molecules!

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