Equipment
Placed under flask to improve solution visibility.
What is paper?
Calculate the pH of a solution that is 0.50 M acetic acid (CH3COOH) and 0.50 M sodium acetate (CH3COONa). Determine if acidic or alkali.
(The pKa of acetic acid is 4.76)
4.76
Acidic
How you measure how much of the solution put into the flask.
What is from the top-down?
The number on the pH scale that determines neutrality.
What is 7?
One of Dr. Hagenhoff's favorite words, in regards to this chapter.
What is Amphoteric?
The piece used to hold the standardized solution, when not in use.
What is a bottle?
Calculate the pH of a buffer solution containing 0.15 M ammonia (NH3) and 0.35 M ammonium chloride (NH4Cl). Determine if acidic or basic.
(The pKa for NH4+ is 9.25)
8.88
Base
The sign of a perfect titration and how long it lasts.
What is a faint pink color that lasts for 30 second?
The solution with a known concentration
What is titrant?
The first thing you do with the titrant.
What is standardize it?
The instrument used to hold the titrate dispenser.
What is a ring stand?
You need to create a pH 7.40 buffer using 0.10 M NaH2PO4 (acid) and Na2HPO4 (conjugate base). What concentration of Na2PHO4 is required?
(The pKa of H2PO4- is 7.21)
0.155 M
When you should add an indicator to a solution.
What is before adding the base?
Used to measure acidity, basicity, and neutrality of a substance.
What is the pH scale?
Which of these is a strong acid:
H3PO4, HCOOH, H2SO4, HS-
What is sulfuric acid (H2SO4)?
A piece of equipment used to drip/stream liquid into conical flask.
What is a Burette?
A 50.0 mL sample of 0.10 M formic acid (HCOOH, pKa is 3.75) is titrated with 20.0 mL of 0.10 M NaOH. Calculate the pH of the resulting solution and determine if acidic or basic.
3.57
Base
Titrations are used to find this.
What is the concentration of an unknown?
The definition that says acids are proton donors and bases are proton acceptors.
What is the Bronsted-Lowry Definition?
Which of these is a strong base?
HCOOH, CsOH, NH4OH, N(CH3)3
What is CsOH?
The piece used to accurately transfer a precise amount of liquid.
What is a volumetric pipette?
You titrate 100.0 mL of 0.20 M Methylamine (CH3NH2, pKa is 3.36) with 40.0 mL of 0.25 M HCL. Calculate the pH of the resulting solution and determine if acidic or alkali.
10.64
Alkali
A plot of a analyte's pH against the volume of titrant added and used to visualize the progress of the reaction.
What is a titration curve?
The definition that says acids release H+ ions in water, while bases release OH- in water.
What is the Arrhenius Definition?
Dr. Hagenhoffs karaoke name.
What is MC(delta)T?