CaCl2 + H2O CO2 (Not Balanced)Review for Quiz
(What I think You Need to Know)
1. Know how to use the concentration equation:
- C1V1 = C2V2(total)
2. Know how to convert:
- grams to moles and moles to grams
- molarity to moles and molarity to liters
3. Understand that H3PO4 can be written as 3 moles H+ / 1 mole H3PO4 .
4. Understand that 5 moles HCl / 1 L is equal to 0.2 L / 1 mole HCl.
5. Be able to do neutralization reactions and balance reactions.
6. Still need to know nomenclature.
Practice Problems: If you can do these, you should get at least a B+ on the test!
a) If I mix 1 L of H2O with 125 mL of 6 M hydrochloric acid, what is the new concentration?
b) How many grams of sodium hydroxide do I need to make a 3 L bottle of 3.5 M solution?
c) If I have 10 mL of concentrated nitric acid(12 M), how much water do I need to add to make a 0.5 M solution?
d) How many mL of 2.0 M barium hydroxide is needed to neutralize 100 mL of 4.5 M sulfuric acid?
e) How many grams of CuSO4 are needed to form 45.0 g of CuSO4 * 5 H2O? (Assume unlimited water)
CuSO4 + 5 H2O
CuSO4 * 5 H2O
f)
If I add 27.4 g of calcium carbonate to 125 mL of 2.20 M hydrochloric acid, how many grams of carbon dioxide is given off? What is the limiting reagent? CaCO3 + HCl CaCl2 + H2O CO2 (Not Balanced)
g)
If I mix 135 mL of 2.5 M potassium hydroxide with 238 mL of 0.6 M magnesium sulfate, how much magnesium hydroxide is formed? What is the limiting reagent? KOH + MgSO4Mg(OH)2 + K2SO4 (Not balanced)