Molar Concentration

[Jose Robles 1D]

Need clarification, how do I determine if the concentration is either positive or negative for the table?

[Ariana Iranmahboub1G]

If there is initially no products, then the change in concentration for products must be positive and the change in concentration for reactants must be negative. The same would apply for vice versa. Also if Q is less than K, then than the change in concentration for the products will also be positive and the reactants will be negative because the reaction will proceed forward. If Q is greater than K, then the change in concentration for the products will be negative and the reactants will be positive because the reaction will proceed in reverse.

[Bryan Chen 1H]

Usually if there are no products yet and only reactants, the reactants will decrease and the products will increase by a multiple of X depending on the co-efficients.

[AniP_2D]

Depending if there is an initial amount of products or reactants, the one with no amount will increase and the other will decrease. To determine how many values of X increase or decrease, you must see if the reactant and products have a coefficient in the balanced equation.

[Lauren Tanaka 1A]

It depends on the number of products or reactants that are present initially. If there is an initial amount, that number will decrease and those that start at 0 will increase.