Acids
This is how acids taste.
What is sour?
This is how bases taste.
What is bitter?
The pH of a solution of HBr is found to be 2.45.
Find the pOH.
What is 11.55?
If you add a catalyst which way would this reaction shift in its equilibrium?
N2(g) + 3 H2(g) <--->2 NH3(g)
It has no shift.
True or False: All reversible reactions are at chemical equilibrium.
What is False?
This is an example of a common acid.
What is [any common acid from the reference table or any legitimately named acid that ends in the word "acid"] ...or water or sodium bicarbonate?
This is an example of a common Bronsted-Lowry base.
What is [any common base listed in the chemistry reference tables, including ammonia, or any legitimately named base that ends in "hydroxide"] ...or water or sodium bicarbonate?
If pH= 4.87, find [H3O+]
What is 0.0000135 M or 1.35 x 10-5 M?
If you increase pressure which way will this reaction shift in its equilibrium?
N2(g) + 3 H2(g) <-->2 NH3(g)
To the right.
True or False: All acids & bases are considered electrolytes.
What is True?
If you add acid to blue litmus paper, the paper turns this color.
What is Red?
If you add base to red litmus paper, the paper turns this color.
What is Blue?
If [OH-] = 5.6 x 10-11 M, find the pH
What is 3.75?
If you remove NH3 which way does this reaction shift in its equilibrium?
N2(g) + 3 H2(g) <--->2 NH3(g)
To the right.
These are the two products of any neutralization reaction.
What is a salt (or ionic compound) and water?
[Order does not matter, but both must be included.]
This is where acids rank on the pH scale.
What is "less than 7?"
An Arrhenius base will give off this ion.
What is hydroxide?
OR What is OH-?
If you are given [OH-]=5.25 x 10-6 M,
find [H+]
What is 0.000000002 M
or 2.0E-9 or 2.0 x 10-9 M?
If you add more N2 which way will this reaction shift in its equilibrium?
N2(g) + 3 H2(g) <--->2 NH3(g)
To the right.
This is what the word "strong" in "strong acid" refers to.
What is the fact that the acid dissociates in water completely (or 100%), and therefore is not reversible in the present conditions? [Just completely dissociates is a fine answer.]
NO CREDIT if it's an answer related to concentration, molarity, damage, or pain.
An acid will have this ion at the beginning of its formula.
What is (at least one) hydrogen ion?
On the pH scale, this is where bases rank.
What is "greater than 7?"
If you are given [H3O+] = 1.8 x 10-3 M,
find the [OH-]
What is 5.6 x 10-12 M
Without changing the amount of H2 and N2 in the flask how could you shift the reaction equilibrium to make more NH3?
N2(g) + 3 H2(g) <--->2 NH3(g) + heat
What is one of the following examples?:
1) Add ice / lower temperature.
2) Increase pressure / Decrease volume.
3) Remove some NH3 from the system (though how could you separate that gas from the others?...)
This is what is means if a chemical is considered amphoteric.
What is it can act like either an acid or a base, depending on the situation?