ICE Table Flashcards
What is an equilibrium constant (Keq)?
A value that expresses how far the reaction proceeds before reaching equilibrium. A small number means that equilibrium is towards the reactants side while a large number means that the equilibrium is towards the product side
What is equilibrium law expression?
The ratio of the concentrations of the products over the reactants
When is simplifying used (approximation)?
If 1000xK is less than initial concentration, then any ‘x’ that is added or subtracted may be crossed out. Any ‘x’ that is a multiplying or dividing factor cannot be crossed out.
What are the steps to make an ICE table?
Separate each product and reactant in the balanced chemical equation. For the I row, insert the initial molar concentrations of the reactants or products. If the molar concentration is not provided, you will have to use the formula C= n/V. Row C is obtained by using the stoichiometric ratios given in the balanced chemical equation. substances being consumed are negative and substances being produced are positive entries. The E row is obtained by adding the I and the C row together.
When is quadratic equation used?
If the value of K is too large to ignore, calculations may involve the need to solve a quadratic equation. For example, if you cannot take the square root and the assumption method is impossible
What is the quadratic equation?
[-b +/- (b^2 -4ac)^(1/2)]/2a
What is the expression used to find K?
K=[products]^a/[reactants]^b
