Acids and Bases Flashcards
Donates protons
Acid
Accepts protons
Base
Are molecules or substance that has a positive electric charge
Protons
Formed when an acid loses a proton-formed
Conjugate base
When a base accepts a proton
Conjugate acid
A positively charged ion
Cation
A negatively charged ion
Anion
Is an ion that has both positive and a negative charge
Zwitterion
French chemist proposed that all acids contain a common element oxygen.
Antoine Lavoisier
Antoine Lavoisier proposed that all acids contain a common element. What common element is this?
Oxygen
TRUE or FALSE
Oxygen is derived from a Greek phrase meaning “acid former.”
True
Oxygen is derived from a Greek phrase meaning what?
acid former
Showed in 1810 that muriatic acid (now called hydrochloric acid) contains only hydrogen and chlorine but no oxygen
English chemist Sir Humphrey Davy
Muriatic acid is now called?
Hydrochloric acid
TRUE or FALSE
Muriatic acid contains only hydrogen and chlorine and there is oxygen
FALSE
Muriatic acid contains only hydrogen and chlorine BUT NO oxygen
TRUE or FALSE
Davy’s studies suggested that the common element in acids is hydrogen, not oxygen.
TRUE
Who suggested that the common element in acids is hydrogen, not oxygen?
English chemist Sir Humphrey Davy
In 1887, who clarified the relationship between acidic behavior and the presence of hydrogen in a compound?
Swedish chemist Svance Arrhenius (1859-1927)
A substance that dissociates in water to give hydrogen ions (H^+)
An acid
A substance that dissociates in water to give hydroxide ions (OH-)
A base
General formula for metal hydroxide
MOH
Accounts for the properties of many common acids and bases, but it has important limitations.
Arrhenius theory
TRUE or FALSE
Arrhenius theory is restricted to aqueous solutions
TRUE
TRUE or FALSE
Arrhenius theory is open to all aqueous solutions
FALSE
Arrhenius theory is restricted to aqueous solutions
TRUE or FALSE
Arrhenius theory it doesn’t account for the basicity of substances
TRUE
TRUE or FALSE
Arrhenius theory it does account for the basicity of substances
FALSE
Arrhenius theory it DOESN’T account for the basicity of substances
TRUE or FALSE
Arrhenius theory it doesn’t account for the basicity of substances like corona (NH₂) that don’t contain OH groups.
TRUE
In 1923, a more general theory of acids and bases was proposed independently by
Danish chemist Johannes Bronsted and English chemist Thomas Lowry
TRUE or FALSE
According to the Bronsted-Lowry theory, an acid is any substance that can transfer a proton to another substance
TRUE
TRUE or FALSE
According to the Bronsted-Lowry theory, a base is any substance that can accept a proton.
TRUE
TRUE or FALSE
According to the Bronsted-Lowry theory, a base is any substance that can transfer a proton to another substance
FALSE
It should be an acid, not a base
TRUE or FALSE
According to the Bronsted-Lowry theory, an acid is any substance that can accept a proton.
FALSE
It should be a base, not an acid
Any substance that can accept a proton.
A base
Is any substance that can transfer a proton to another substance
An acid
Proton donors
Acids
Proton acceptors
Bases
TRUE or FALSE
Bases are proton donors
FALSE
Bases are proton acceptors
TRUE or FALSE
Acids are proton acceptors
FALSE
Acids are proton donors
Are proton-transfer reactions:
Acid-base reactions
A substance that can transfer H^+
Bronsted-Lowry Acid
A substance that can accept H^+
Bronsted-Lowry Base
TRUE or FALSE
Bronsted-Lowry Acid is a substance that can transfer H^+
TRUE
TRUE or FALSE
Bronsted-Lowry Base is a substance that can accept H^+
TRUE
TRUE or FALSE
Bronsted-Lowry Acid is a substance that can accept H^+
FALSE
Bronsted-Lowry Acid is incorrect. It should be Bronsted-Lowry Base.
TRUE or FALSE
Bronsted-Lowry Base is a substance that can transfer H^+
FALSE
Bronsted-Lowry Base is incorrect. It should be Bronsted-Lowry Acid .
TRUE or FALSE
Different acids dissociate to different extents in aqueous solution.
TRUE
TRUE or FALSE
Different bases dissociate to different extents in aqueous solution.
FALSE
Different acids
TRUE or FALSE
Acids that dissociate to a large extent are strong electrolytes and strong acids
TRUE
TRUE or FALSE
Acids that dissociate to only a small extent are weak electrolytes and weak acids
TRUE
TRUE or FALSE
Acids that dissociate to a large extent are weak electrolytes and strong acids
FALSE
Acids that dissociate to a large extent are STRONG electrolytes and strong acids
TRUE or FALSE
Acids that dissociate to only a small extent are strong electrolytes and weak acids
FALSE
Acids that dissociate to only a small extent are WEAK electrolytes and weak acids
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
HCl-Hydrochloric acid,
HBr-Hydrobromic acid,
HI-Hydrogen iodide
Strong electrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
CH3CO2H-Acetic acid
weak electrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
H2O
Nonelectrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
CH3OH (methyl alcohol)
Nonelectrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
НF-Hafnium
weak electrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
HCIO-Hypochlorous acid
Strong electrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
HNO3-Nitric acid
Strong electrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
H₂SO4-sulfuric acid
Strong electrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
KBr-Potassium bromide
Strong electrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
NaCl-Sodium chloride
Strong electrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
C2H3OH (ethyl alcohol)
Nonelectrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
C12H22011 (sucrose
Nonelectrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
N2OH-Sodium hydroxide,
KOH-Potassium hydroxide
strong electrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s.
Most compounds of carbon (organic compounds)
Nonelectrolyte/s
Identify if the given is a strong electrolyte/s, weak electrolyte/s or Nonelectrolyte/s
Other soluble ionic compounds
strong electrolyte/s
Substances which dissolve in water to produce conducting solutions of ions
Electrolytes
TRUE or FALSE
NaCl or KBr is an example of Electrolytes
TRUE
Do not produce ions in aqueous solution
Nonelectrolytes
TRUE or FALSE
Nonelectrolytes - substances such as sucrose or ethyl alcohol, which do not produce ions in aqueous solution
TRUE
Different acids can have ___________________ and yield different numbers of H₂O+ ions in solution
different numbers of acidic hydrogens
A monoprotic acid because it provides only one H+ ion
Hydrochloric acid (HCI)
TRUE or FALSE Hydrochloric acid (HCI) is a monoprotic acid because it provides more than one H+ ion
FALSE Hydrochloric acid (HCI) is a monoprotic acid because it provides ONLY one H+ ion
A diprotic acid because it can provide two H+ ions.
Sulfuric acid (H₂SO4)
TRUE or FALSE Sulfuric acid (H₂SO4) is a diprotic acid because it can provide two H+ ions.
TRUE
A triprotic acid and can provide three H+ ions
Phosphoric acid (H3PO4)
TRUE or FALSE
With sulfuric acid,
the first dissociation of an H+ is complete—all H₂SO4 molecules lose one H+
TRUE
TRUE or FALSE
With sulfuric acid,
the second dissociation of an H+ is complete—all H₂SO4 molecules lose one H+
FALSE
first dissociation
TRUE or FALSE
With sulfuric acid, - the second dissociation is incomplete, as indicated by the double arrow in the following equation:
H₂SO4 (aq) + H₂O(l) H2SO4 (aq) + H3O+ (aq)
HSO4-(aq) + H₂O(l) 〖SO〗_(4 ) 2^- (aq) + H₂O+ (aq)
TRUE
H3PO4(aq) + H₂O(l) H₂PO4¯(aq) + H3O+(aq)
H₂PO4¯(aq) + H₂O(l) 〖HPO〗_(4 ) 2^- (aq) + H3O+(aq)
〖HPO〗(4 ) 2^- (aq) + H₂O(l) 〖PO〗(4 ) 3^- (aq) + H3O+ (aq)
Phosphoric acid
Is HClO4, Perchloric acid, a strong acid?
Yes
Is H2SO4, Sulfuric acid, a strong acid?
Yes
Is HBr, Hydrobromic acid, a strong acid?
Yes
Is HBr, Hydrobromic acid, a weak acid?
No. It’s a strong acid.
Is H2SO4, Sulfuric acid, a strong base?
No. It’s a strong acid.
Is HCl, Hydrochloric acid, a strong acid?
Yes.
Is HNO3, Nitric acid, a weak base?
No. It’s a strong acid.
Is KOH, Potassium hydroxide, a weak base?
No. It’s a strong base.
Is NaOH, a strong acid?
No. It’s a strong base.
Is Ba(OH)2, a strong base?
Yes
Is Ca(OH)2, a strong base?
Yes
Is NH3, Ammonia, a weak base?
Yes
Is NH3, Ammonia, a strong base?
No. It’s a weak base.
Is Phosphoric Acid (H3PO4) a strong acid?
No. It’s a weak acid.
Is Hydrofluoric acid (HF) a weak acid?
Yes
Is HNO2, Nitrous acid, a strong acid?
No. It’s a weak acid.
Is CH3CO2H a strong acid?
No. It’s a weak acid.
TRUE or FALSE
CH3CO2H is Acetic acid
TRUE
TRUE or FALSE
Most acids are oxoacids.
TRUE
They contain oxygen in addition to hydrogen and other elements
Oxoacids