Order Laboratory Procedure Assignment

Order Laboratory Procedure Assignment
Order 5998030
Order Laboratory Procedure Assignment
1. A 98-gram sample of phosphoric acid, H3PO, (a weak acid), is dissolved
in 1 kg of water. Assuming no other information is available, which of
the following procedures is the best say determine the mo/arity of the
solution?
(A) Measure the total mass of the solution
(B) Measure the total volume of the solution
(C) Measure the pH of the solution with a calibrated pH meter
(D) Determine the boiling point of the solution
(E) Titrate the solution with a standard acid
Questions 434-438 refer to the following answer choices:
(A) Visible-light spectrophotometry Oras
(B) Paper chromatography
(C) Titration
(D) Gravimetric determination or differential precipitation
(E) Electrodes
Can be used to measure the conductivity of a solution
Used to separate pigments in a mixture
Used to determine the concentration of a solution of KMnO,
Used to determine if Na*, Mg”*, and/or Pb?* ions are present in a solution
Used to determine the unknown concentration of a known reactant
439.
Order Laboratory Procedure Assignment
Laboratory Procedure » 500AP Chemistry Questions to Know by Test Day
Order Laboratory Procedure Assignment
2 A student weighs out 0.20 mol of glucose to prepare a 2-M glucose
solution. Which of the following pieces of laboratory equipment is most
appropriate for preparing this solution?
(A) 100-mL graduated cylinder
(B) 1-L graduated cylinder
(C) 1-L Erlenmyer flask
(D) 100-mL volumetric flask
(E) 1-L volumetric flask
1, Which of the following techniques is most appropriate for recovering solid
NH,NO, from an aqueous solution of NH,NO;?
(A) Thin layer chromatography
(B) Evaporation
(C) Distillation
(D) Filtration
(E) Titration
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