Acids/Bases - 1
How Does Acids Test?
Sour
pH = 4.93 x 10-8
What is the pOH
What is the [OH-]
What is the [H+]
Is it acidic or base
pOH= 13.99 / 14
[OH-] = 1 X 10-14
What is the [H+]= .99 / 1
At what temperature are the following solutes equally soluble in 100g of water?
a. NaNO3 and KNO3 ___________
b. KNO3 and NaCl ___________
c. NaCl and KCl ___________
A = 61-64 oC
B = 20 oC
C= 40 oC
How Does Bases Feel?
Soapy
1. In the Brønsted–Lowry definition of acids and bases, an acid __________
A. is a Corresponding Metals
B. is a Proton Acceptor
C. is a Proton Donor
D. Breaks stable Hydrogen Bonds
C. A Proton Donor
What is the PH of Acids, Bases , and Neutrals
Acids <7
Bases >7
Neutral = 7
Determine the pH of a 0.010 M HNO3 solution
1
2. Most and least soluble at different temperatures: a. Which salt is least soluble at 20o C?________ b. Which salt is most soluble at 10o C?_________
Least = KCIO3
Most = KI
How Does Bases Taste
Bitter
A solution with an [OH– ] concentration of
1.20 × 10–7 M has a pOH and pH of what?
pOH = 6.92
pH = 7.08
What color does the Litmus paper turn if it is an Acid or if it as a Base
Acid - Red
Base= Blue
A solution is found to have a pH of 8.3. What is the hydroxide ion, [OH- ], concentration?
1.99 x 10-6 / 2 x 10-6
These solubility curves are based on the solubility (in grams) of various salts dissolving in ____________ grams of water. In general for solids, as temperature increases, the solubility of the salt __________________
100
Increases
As the number of hydrogen ions (H+) decreases, the pH ___________.
Increases
How many grams of each solute below is needed to saturate 100g of water at 80 o C to prepare the following solutions?
a.KNO3
b. KCl
150 Grams
50 Grams
An acid that only contains on H and one other element is called a _______________ acid.
Binary Acid
Given a solution with a hydroxide ion concentration, [OH- ] = 2.73 × 10-5 , what is the pH?
9.44
The quantity of solute per 100 g of water used in making some solutions is listed below. Is the solution saturated, unsaturated, or supersaturated?
Solute: Temperature
103 g KNO3 60 oC
40 g KCl 40 oC
20 g KClO3 30 oC
Saturated
Supersaturated
Supersaturated
Which type of ion does a base produce when it is dissolved in water?
When dissolved in water, acids produce:
Hydroxon Ions and Hydronium/ Hydrogen Ions
Find the pH of a 0.000841 M solution of sodium hydroxide
10.92
Is water an Acid or A base
Neutral
The measured pOH of a solution is 5.5. What is the hydrogen ion, [H+ ], concentration?
3.16 x 10-9
9. How many grams of solute are needed to make a saturated solution at 80 oC in the quantities of water indicated
?grams of KNO3 in 200 grams of H2O
? grams of KCl in 300 grams of H2O
? grams of NaCl in 50 grams of H2O
300 grams
150 Grams
20 Grams
Is vinegar an acid o a base
Acid
Is milk an Acid or a Base
Slightly Acidic