6. Chemical Quantities & Aqueous Reactions

Molarity

Multiple Choice
2.64 grams of an unknown compound was dissolved in water to yield 150 mL of solution. The concentration of the solution was 0.075 M. What was the molecular weight of the substance?
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Multiple Choice
A student determined that the equivalence point for the titration of 2.387 g of a diprotic acid with 1.049 M NaOH was 48.35 mL. Calculate the molar mass of the acid.
Multiple Choice
Determine the molarity of acetic acid if 13.45 mL of acetic acid requires 22.73 mL of 0.112 M NaOH for complete neutralization. Assume the reaction is 1:1.
Multiple Choice
The molarity (M) of an aqueous solution containing 22.5 g of sucrose (C₁₂H₂₂O₁₁) in 35.5 mL of solution is:
Open Question
Volume (ml) of 2.25 M potassium hydroxide that contains 15.0 g of solute
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Open Question
How many moles of HCl are present in 0.70 L of a 0.33 M HCl solution?
Multiple Choice
What is the concentration of K⁺ ions in a 0.025 M K₂CO₃ solution assuming complete dissociation?
Open Question
What mass of MgBr₂ in grams are in 215 mL of a 0.350 M solution of MgBr₂?
Multiple Choice
What is the mass of NaCl required to prepare 500 mL of a 0.5 M NaCl aqueous solution?
Multiple Choice
What is the molarity of a NaCl solution if 3.16 moles of NaCl are dissolved in enough water to make 1 liter of solution?
Multiple Choice
Calculate the molarity of calcium chloride (CaCl2) if 31.9 g of solid calcium chloride is dissolved in enough water to make 692 mL of solution. (Molar mass of CaCl2 = 110.98 g/mol)
Multiple Choice
What volume in (µL) of 0.125 M HBr contains 0.170 moles HBr?
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