mixtures acids and bases
Which substances are acids? Check all that apply.
2 3 5
Which substances are bases? Check all that apply.
2 4
The number of hydrogen ions would equal the number of hydroxide ions in a solution with a pH of
7
A chemistry teacher adds 50.0 mL of 1.50 M H2SO4 solution to 200 mL of water. What is the concentration of the final solution? Use mc017-1.jpg.
A
A compound that releases hydroxide ions in solution would most likely have which chemical property?
A
A recipe gives the instructions below. After browning the meat, pour off the fat from the pan. To further reduce fat, use a strainer. What type of separation methods are described in the recipe?
A
A stock solution is made by dissolving 66.05 g of (NH4)2SO4 in enough water to make 250 mL of solution. A 10.0 mL sample of this solution is then diluted to 50.0 mL. Given that the molar mass of (NH4)2SO4 is 132.1 g/mol, what is the concentration of the new solution? Use mc022-1.jpg and mc022-2.jpg
A
Carla is using a fertilizer that contains nitric acid. How is nitric acid classified?
A
In which situation will screening be used to separate a mixture
A
Which best defines concentration
A
Which best describes the pH scale?
A
Which is a way to express concentration of a solution
A
Which method of separating a mixture involves passing a heterogeneous mixture through several layers of different materials?
A
Which product contains a strong base that would most likely completely dissolve in water?
A
Which solution has the greatest number of hydroxide ions?
A
Who would most likely be required to work with sodium hydroxide?
A
Apple juice has a lower pH than black coffee. Which best explains the relationship?
B
Heartburn is a form of indigestion felt as a burning sensation in the chest when stomach acid comes back up into the esophagus. Some people take an antacid to relieve heartburn. Which best describes the antacid's effect
B
How many moles of Ba(NO3)2 are there in 0.25 L of a 2.00 M Ba(NO3)2 solution? Use mc007-1.jpg.
B
Kichi made a table to identify where she might find acids and bases in her house based on their common uses.
B
While researching life during colonial times, Carson learns that people would extract potassium hydroxide from wood ashes and mix it with animal fat. What were the colonists doing?
B
A chemist uses 0.25 L of 2.00 M H2SO4 to completely neutralize a 2.00 L of solution of NaOH. The balanced chemical equation of the reaction is given below. 2NaOH + H2SO4 mc012-1.jpg Na2SO4 + 2H2O What is the concentration of NaOH that is used
C
In a group assignment, students are required to fill 10 beakers with 0.720 M CaCl2. If the molar mass of CaCl2 is 110.98 g/mol and each beaker must have 250. mL of solution, what mass of CaCl2 would be used? Use mc008-1.jpg.
C
In a school's laboratory, students require 50.0 mL of 2.50 M H2SO4 for an experiment, but the only available stock solution of the acid has a concentration of 18.0 M. What volume of the stock solution would they use to make the required solution? Use mc018-1.jpg.
C
The equation shows a neutralization reaction. H2SO4 + 2NaOH Na2SO4 + 2H2O What is Na2SO4?
C
Which method is best for separating most of a solid from a gas quickly?
C
Which solution is the most concentrated?
C
Why is a protective apron or lab coat important to use when working with acids?
C
Different periods in human history are named for the materials used to make tools. Dr. Franklin is searching through layers of soil, looking for tools made by humans. After screening the top layer of soil, he uses a magnet to help speed up the search. Which type of location is Dr. Franklin most likely searching?
D
Given that the molar mass of NaNO3 is 85.00 g/mol, what mass of NaNO3 is needed to make 4.50 L of a 1.50 M NaNO3 solution? Use mc031-1.jpg.
D
Hector uses the apparatus below to separate a mixture. How do the substances compare
D
Maria works in a hardware store. A bin of aluminum nails and a bin of iron nails are knocked over, and the nails get mixed up. Both sets of nails are the same color and size. What makes separating the nails a fairly easy job?
D
Mrs. Rushing fills a balloon with hydrogen gas to demonstrate its ability to burn. Which combination could she use to produce the hydrogen she needs?
D
What is a common use of nitric acid?
D
While doing a distillation, Farha heats the mixture too fast, and the temperature rises too quickly. If the mixture is composed of two liquids, how will this likely affect the separation of the mixture?
D
An acid or a base dissolved in water breaks down into a positive and a ion.
NEGATIVE
A company has a volume of contaminated water that needs to be separated through evaporation. What would allow the mixture to be separated in the shortest time?
placing the water in several shallow pools in a sunny spot