pH values of solution x
Please help me with this quesions! I feel I have an overall understanding of everything but I am having trouble applying it to these...
A student prepares a solution (Solution X) by dissolving 0.045 mol of HA and 0.072 mol of NaA into a beaker containing pure water.
- NaA is fully soluble in water and forms Na+ (aq) and A– (aq) ions.
- If the total volume of solution X is 150.0 mL and the Ka of HA = 1.9 x 10-6, calculate the pH value of Solution X at 25oC.
Suppose we now add 0.020 mol of the strong acid HCℓ to Solution X.
- How many moles of HA will be present at equilibrium after the HCℓ was added?
- How many moles of A– will be present at equilibrium after the HCℓ was added?