Answers
1. Pick three properties of a base.
a)Slippery
b) Wet
c)Conducts electricity
d) Turns blue litmus paper red
e) Bitter to taste
f) Reacts with metal to form hydrogen gas
2. What does nitric acid form?
Nitrates
3. if pOH is 11.11, what is [OH-]? Then find pH and [H+].
[OH-] = 2nd log(-pOH) pOH + pH = 14
=7.76e-12 14-11.11=2.89
4. What is the difference between an Alkali and a Base?
An Alkali is a Base that can be dissolved in water.
5. What is the product of neutralization?
Salt Water
6. What are 2 theoretical definitions of an acid?
(Any two of these are correct.)
1. A substance that acts as a proton donor, as an acid.
2. A substance is an acid if it produces hydrogen ions (H+)in water.
3. A substance is an acid if it acts as an electron pair acceptor.
7. Which statement is true about all acid solutions
a) They produce hydrogen on reaction with any metal.
b) Ammonia is given off when they react with ammonium salts.
c) Carbon dioxide is given off when strong acids react with carbonates.
8. If pH = 2, find [H+]. Then find pOH and [OH-].
If pH = 2, find [H+]. Then find pOH and [OH-].
[H+] = 2nd log(-pH) pOH + pH = 14
[H+] = 0.01M 14 - 2 = 12 pOH = 12
9. NH3(g)+H2O(l)→NH+4(aq)+OH−(aq)
Label which is the base and the acid as well as which becomes the conjugate base and the conjugate acid.
NH3= Base
NH+4= Conjugate Acid
(The conjugate base is formed when the acid donates a proton)
OH- = Conjugate Base
H20= Acid
10. True or false A strong base dissociates slightly in water.
False! A strong base dissociates completely in water.
11.True or False an acid is a proton receptor
False! A base is a proton receptor.
12. H2SO4 + Mg --> ?
MgSO4 + H2
13. Adding hydrochloric acid to sodium hydroxide ______ the pH value.
Increases!
14. If [OH-] = 0.7M, find [H+]. * You will need more than one equation.
pOH = -log[OH-] pOH + pH = 14
pOH = 0.2 14 - 0.2 = 13.8 pH = 13.9
[H+] x [OH-] = 1x 10E-14
1x 10E-14/0.7M=0.00000000000001429
15. Citric Acid + Magnesium --> ?
Magnesium Citrate
a)Slippery
b) Wet
c)Conducts electricity
d) Turns blue litmus paper red
e) Bitter to taste
f) Reacts with metal to form hydrogen gas
2. What does nitric acid form?
Nitrates
3. if pOH is 11.11, what is [OH-]? Then find pH and [H+].
[OH-] = 2nd log(-pOH) pOH + pH = 14
=7.76e-12 14-11.11=2.89
4. What is the difference between an Alkali and a Base?
An Alkali is a Base that can be dissolved in water.
5. What is the product of neutralization?
Salt Water
6. What are 2 theoretical definitions of an acid?
(Any two of these are correct.)
1. A substance that acts as a proton donor, as an acid.
2. A substance is an acid if it produces hydrogen ions (H+)in water.
3. A substance is an acid if it acts as an electron pair acceptor.
7. Which statement is true about all acid solutions
a) They produce hydrogen on reaction with any metal.
b) Ammonia is given off when they react with ammonium salts.
c) Carbon dioxide is given off when strong acids react with carbonates.
8. If pH = 2, find [H+]. Then find pOH and [OH-].
If pH = 2, find [H+]. Then find pOH and [OH-].
[H+] = 2nd log(-pH) pOH + pH = 14
[H+] = 0.01M 14 - 2 = 12 pOH = 12
9. NH3(g)+H2O(l)→NH+4(aq)+OH−(aq)
Label which is the base and the acid as well as which becomes the conjugate base and the conjugate acid.
NH3= Base
NH+4= Conjugate Acid
(The conjugate base is formed when the acid donates a proton)
OH- = Conjugate Base
H20= Acid
10. True or false A strong base dissociates slightly in water.
False! A strong base dissociates completely in water.
11.True or False an acid is a proton receptor
False! A base is a proton receptor.
12. H2SO4 + Mg --> ?
MgSO4 + H2
13. Adding hydrochloric acid to sodium hydroxide ______ the pH value.
Increases!
14. If [OH-] = 0.7M, find [H+]. * You will need more than one equation.
pOH = -log[OH-] pOH + pH = 14
pOH = 0.2 14 - 0.2 = 13.8 pH = 13.9
[H+] x [OH-] = 1x 10E-14
1x 10E-14/0.7M=0.00000000000001429
15. Citric Acid + Magnesium --> ?
Magnesium Citrate
Congrats you are done! |