pH Worksheet #2
Dr. Slotsky Honors Chem II
Definition of pH: pH = - log [H3O+]
Definition of pOH: pOH = - log[OH-]
Relationship of pH and pOH: pH + pOH = pKw = 14
Molarity: M = n/V where n is the number of moles and V is volume in Liters
pH Problems:
1)
What is the pH of 3 M HNO3?
2)
What is the pH of 0.01 M KOH?
3)
What is the pH of 0.001M HCl?
4)
What is the pH of 1M LiOH?
Lithium nitride (Li3N) reacts with water (H2O) to form a solution of lithium
hydroxide (LiOH) and ammonia gas (NH3). Balance this reaction:
__Li3N + __H2O → __LiOH + __NH3
5)
How many moles are in 0.348 grams of Li3N?
6)
The sample of Li3N mentioned above is reacted with water. How many
moles of LiOH are produced? (HINT: mole ratios from balanced equation)
7)
The volume of the solution is 10 L. What is the molarity of LiOH?
8)
What is the pH of this solution?