Multiple Choice
How many milliliters of 0.325 M HCl are needed to react with 16.2 g of magnesium metal?
2 HCl (aq) + Mg (s) → MgCl2 + H2 (g)
6. Chemical Quantities & Aqueous Reactions
Solution Stoichiometry
Back6. Chemical Quantities & Aqueous Reactions
Solution Stoichiometry
- Multiple Choice
What is the molar concentration of a hydrobromic acid solution if it takes 34.12 mL of HBr to completely neutralize 82.56 mL of 0.156 M Ca(OH)2?
2 HBr (aq) + Ca(OH)2 (aq) → CaBr2 (aq) + 2 H2O (l)
- Multiple Choice
Consider the following balanced chemical equation:
H2O+ 2 MnO4– + 3 SO32- → 2 MnO2 + 3 SO42-+ 2 OH–
How many grams of MnO2 (MW:86.94 g/mol) will be created when 25.0 mL of 0.120 M MnO4– (MW:118.90 g/mol) reacts with 32.0 mL of 0.140 M SO32- (MW:80.07 g/mol).
- Open Question
Titration of a 20.0-ml sample of acid rain required 1.7 ml of 0.0811 m NaOH to reach the end point. If we assume that the acidity of the rain is due to the presence of sulfuric acid, what was the concentration of sulfuric acid in this sample of rain?"
- Open QuestionWhat mass of na2cro4 is required to precipitate
- Open QuestionWhat mass of barium sulfate can be produced when
- Open Question
The mass percent of CaCO3(s) in the eggshell sample is closest to
- Multiple Choice100.0 mL of 0.100 M sodium phosphate is mixed with 100.0 mL of 0.120 M calcium chloride. What mass of calcium phosphate precipitate is formed?
- Multiple ChoiceA FeCl3 solution is 0.175 M. How many mL of a 0.175 M FeCl3 solution are needed to make 650 mL of a solution that is 0.300 M in Cl⁻ ion?
- Multiple ChoiceA student dissolved 5.00 g of Co(NO3)2 in enough water to make 100.0 mL of stock solution. He took 4.00 mL of the stock solution and then diluted it with water to give 275.0 mL of a final solution. How many grams of NO3- ion are there in the final solution?
- Multiple ChoiceCalculate the molarity of an unknown sulfuric acid (H₂SO₄) solution if a 25.0 mL sample of the acid solution consumes 27.2 mL of 0.138 M NaOH solution in a titration. Assume the reaction is: H₂SO₄ + 2 NaOH → Na₂SO₄ + 2 H₂O.
- Multiple ChoiceWhat is the concentration of carbonate ions (CO3^2−) in a 0.090 M carbonic acid (H2CO3) solution, assuming complete dissociation?
- Multiple ChoiceHow many milliliters of 0.534 M H₂SO₄ are required to neutralize 245 mL of 0.633 M KOH?
- Multiple ChoiceWhat is the concentration of chloride ions in the solution formed by mixing 3.50 g of NaCl with 40.9 mL of 0.407 M CaCl2 solution, assuming the volumes are additive?
- Multiple ChoiceWhat is the concentration of a solution of HCl in which a 10.0 mL sample of acid required 50.0 mL of 0.150 M NaOH solution for neutralization?