2CuI (s) + I₂ (aq) → 2 Cu⁺² (aq) + 4 I⁻ (aq)
When writing an equilibrium expression, we use the following values:
A (aq) + 3B (aq) → 2C (aq) + 2D (aq)
The numbers were arbitrary molar equivalents and the uppercase letters are the molecules in the reaction. The species used in the equilibrium expression but all be in the same state, e.g., solid, liquid, aqeuous.
Kc = [C]²[D]² / [A][B]³
We write the formula by taking the concentration of the products, each to the power of their molar equivalent, and multiply them together. We then divide the products by the concentration of the reactants, also to the power of their molar equivalent.
Going back to the initial equation given, we can now write a Kc expression.
Kc = [Cu⁺²]²[I⁻]⁴ / [I₂]
It should be noted that the CuI (s) in the reaction was left out of the Kc expression. Pure solids and liquids are left out of the expression and only the aqueous species are included. The reason being that, in this case, solid CuI does not affect the amount of reactant at equilibrium. Therefore, we just leave the concentration for [CuI] = 1, and remove it from the expression.
Stoichiometry is the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers. Hoped this helped!!!!. Also if you are trying to look for the formulas it should be online just type in stoichometry formulas.
The unit for work is ENERGY
Answer:
2024.1g
Explanation:
Given parameters:
Number of moles of Na = 34.6moles
Unknown:
Mass of product formed = ?
Solution:
We must first establish the reaction equation as shown below;
2Na + Cl₂ → 2NaCl
We solve from the known to the unknown specie;
2 moles of Na produced 2 moles of NaCl
34.6moles of Na will produce 34.6moles of NaCl
Now to find the mass of NaCl;
mass = number of moles x molar mass = 34.6 x (23 + 35.5) = 2024.1g
If the American system is the same, group on should be alkali metals and the answer would be frankium