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Acids and Bases Exam Preparation

Terms in this set (31)

What is the pH range for bases?
8-14
How many moles of NaOH are there in 0.5 liters of a 2.0 M solution?
1.0 moles
What are the units for molarity?
moles/liters
A solution does not react with carbonates and turns phenolphthalein pink. What is it?
It's a base
What acid did we use during the titrations?
hydrochloric acid (HCl)
What was the one difference among all those acids I had in the back room?
They all had different concentrations
What makes up a solution?
A solute and a solvent
What is a solute?
That is what gets dissolved in a solution. Like coffee grounds in a cup of coffee
What is a solvent?
That is what does the dissolving in a solution. Like water in a cup of coffee
What do acids 'donate'?
hydrogen ions (H+)
A lot of bases contain what polyatomic ion?
hydroxide ions (OH-)
How can you identify acids by their formulas?
They all begin with H. For example, like HCl and HNO3
You find a liquid in a flask in the weird cabinet in Mr. Button's room. It turns blue litmus paper red. What is it?
It's an acid
What is the pH range for acids?
0-6
What is the concentration of a solution made with 3.5 moles of NaOH dissolved in 14.0 liters of water?
0.25 M NaOH or 0.25 moles/liter
What is the concentration of a solution made by dissolving 100 grams of NaOH in 5 liters of water?
0.5 M NaOH or 0.5 moles/liter
What is the concentration of a solution made by dissolving 140 grams of NaOH in 1200 mL of water?
2.92 M NaOH or 2.92 moles/liter
How many moles of NaOH are present in 2.0 liters of a 2.5 M solution?
5 moles
How many grams of NaOH are present in 1.5 liters of a 4.0 M solution?
240 grams
How many grams of NaOH are present in 375 mL of a
2.3 M solution?
34.5 grams
You have made a 1.5 M solution of NaOH by dissolving 3 moles of NaOH in ______________ liters of water.
2 liters
You have made a 2.4 M solution of NaOH by dissolving 60 grams of NaOH in ________________ liters of water.
0.625 liters
You have made a 0.45 M solution of NaOH by dissolving 10 grams of NaOH in __________________milliliters of water.
555.6 milliliters
What is the more dilute acid: a 1.0 M solution of HCl or a 0.75 M solution of HCl?
The 0.75 M solution of HCl
Do you know the difference between a strong acid and a weak acid?
no, you don't
What is more concentrated: a 3.2 M solution of NaOH or a 3.0 M solution of NaOH?
The 3.2 M solution of NaOH
You are titrating 30 mL of HCl with 1.0 M NaOH. At the endpoint, you have added 45 mL of NaOH. What is the concentration of the HCl?
1.5 M HCl or 1.5 moles/liter HCl
You are titrating 42 mL of HCl with 3.2 M NaOH. At the endpoint, you have added 23.1 mL of NaOH. What is the concentration of the HCl?
1.76 M HCl or 1.76 moles/liter M HCl
You are titrating 31 mL of HCl with 0.42 M NaOH. At the endpoint, you have added 17.6 mL of NaOH. What is the concentration of the HCl?
0.24 M HCl or 0.24 moles/liter HCl
How you doin?
I'm OK
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