UNE CHEM1010 MIDTERM 2026 GENERAL CHEMISTRY I STUDY GUIDE PRACTICE QUESTIONS AND EXAM REVIEW

UNE CHEM1010 MIDTERM 2026 GENERAL
CHEMISTRY I STUDY GUIDE PRACTICE
QUESTIONS AND EXAM REVIEW




What information is needed to calculate the molarity of an acetic acid
solution?


A) Only the number of moles of dissolved acetic acid
B) The molecular formula of acetic acid, the number of moles of dissolved
acetic acid, and the volume of the solution.
C) Only the number of moles of dissolved acetic acid and the volume of the
solution

D) Only the volume of the solution - CORRECT ANSWER-C) Only
the number of moles of dissolved acetic acid and the volume of the solution


If the volume of an initial solution is quadrupled, the concentration of the
final solution will be


A) double the concentration of the initial solution
B) one half the concentration of the initial solution
C) four times the concentration of the initial solution

D) one-fourth the concentration of the initial solution - CORRECT
ANSWER-D) one-fourth the concentration of the initial solution

,The volume percentage of a solution is


A) the ratio of the volume of the solute to the volume of the solution
B) the ratio of the mass of the solute to the mass of the solution
C) the ratio of the mass of the solute to the volume of the solution

D) the ratio of the volume of the solute to the mass of the solution -
CORRECT ANSWER-A) the ratio of the volume of the solute to the
volume of the solution


How many moles of phosphoric acid, H3PO4, are in 150 mL of a 4.25 M
solution of phosphoric acid?


A) 638 mol
B) 28.3 mol
C) 0.638 mol

D) 0.0353 mol - CORRECT ANSWER-C) 0.638 mol


What volume of 1.97 M HCl is needed to prepare 50.0 mL of 0.50 M HCl?


A) 12.69 mL
B) 14.4 mL
C) 197 mL

D) 0.079 mL - CORRECT ANSWER-A) 12.69 mL


Distillation analysis of a wine sample shows that a 25.0 mL sample contains
3.70 mL of ethanol. What is the percentage of ethanol in the sample?

,A) 14.8 (w/w)%
B) 14.8 (v/v)%
C) 6.76 (v/v)%

D) 6.76 (w/w)% - CORRECT ANSWER-B) 14.8 (v/v)%


How many grams of NaF are in 150 mL of a 1.19 M solution?


A) 7.50 g
B) 4.25 x 10-3 g
C) 7.50 x 103 g

D) 5.29 g - CORRECT ANSWER-A) 7.50 g


A hydroponic fertilizer solution contains 24.9 ppm of magnesium in water
which is equivalent to 24.9 mg/L. What is the total mass of magnesium in
65 L of the fertilizer solution?


A) 1.62 kg
B) 1.62 g
C) 0.383 g

D) 2.61 kg - CORRECT ANSWER-B) 1.62 g


A solution


A) is a pure substance

, B) is always measured in units of molarity
C) is a homogeneous mixture

D) is a heterogeneous mixture - CORRECT ANSWER-C) is a
homogeneous mixture


Seawater is a solution of approximately 3.5% NaCl and 96.5% water. In
seawater


A) the solvent and solute cannot be determined
B) NaCl is the solvent and water is the solute
C) water is the solvent and NaCl is the solute
D) the molarity needs to be calculated to determine the solvent and the
solute - CORRECT ANSWER-C) water is the solvent and NaCl is the
solute


What information is needed to calculate the molarity of an isopropyl
alcohol solution?


A) Only the volume of the solution
B) The molecular formula of isopropyl alcohol, the number of moles of
dissolved isopropyl alcohol, and the volume of the solution.
C) Only the number of moles of dissolved isopropyl alcohol
D) Only the number of moles of dissolved isopropyl alcohol and the volume
of the solution - CORRECT ANSWER-D) Only the number of moles
of dissolved isopropyl alcohol and the volume of the solution


If the volume of an initial solution is tripled, the concentration of the final
solution will be