18 Questions
What is the first step in the analytical process?
Define the problem
What is the term for the process of collecting a small mass of material?
Sampling
What is the difference between accuracy and precision?
Accuracy is how close to the true value, precision is how close to each other
What is the unit of the numerator in molarity?
moles of solute
What type of error occurs when something is intrinsically wrong in the measurement?
Systematic error
What is the formula for relative error?
(Absolute Error / True Value) x 100
What is the unit of the denominator in molality?
kilograms of solvent
What is the percentage of sodium hydroxide in a solution if 25g of sodium hydroxide is dissolved in 100g of solution?
25% by mass
What is the strategy for converting between concentration units?
g -> mol -> atoms
What is the volume of hydrochloric acid in a solution if it is 75% by volume?
75 mL of HCl per 100 mL of solution
What is the concentration of a 35% w/v HCl solution?
35 g of HCl in 100 mL of water
Which of the following concentration units is temperature-independent?
Molality
What is the minimum amount of energy required for a chemical reaction to occur?
Activation energy
What is the term for the process where a solution contains more of the dissolved salt than it can hold?
Supersaturation
What is the principle that states that a chemical reaction will shift in a direction to counteract any changes made to the system?
Le Chatelier's Principle
What is the term for the highest potential energy point in a chemical reaction?
Transition State
What is the process called when a precipitate is contaminated by other substances during its formation?
Coprecipitation
What is the type of reaction that occurs only with the substance of interest?
Specific Reaction
Test your knowledge of analytical chemistry with this quiz covering the introduction to analytical chemistry, methods of analysis, experimental error, and steps in the analytical process. Learn about chemical characterization of matter, qualitative and quantitative analysis, and more.
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