CHEM 1205 LATEST EVALUATION EXAMS
QUESTIONS AND ANSWERS SURE A+
✔✔Molarity equation - ✔✔Moles of solute/liters of solution = M
✔✔What must a Bronsted-Lowry *acid* have? - ✔✔A hydrogen atom
✔✔What must a Bronsted-Lowry *base* have? - ✔✔A lone pair of electrons
✔✔What happens when a Bronsted-Lowry Acid reacts with a Bronsted-Lowry Base? -
✔✔a conjugate base is formed from the acid
a conjugate acid is formed from the base
✔✔What is a conjugate base? - ✔✔The product formed by loss of a proton from an acid
✔✔What is a conjugate acid? - ✔✔The product formed by gain of a proton by a base.
✔✔What is the difference between a strong acid and a weak acid? - ✔✔A strong acid
dissolves in water, 100% of the acid dissociates into ions
A weak acid dissolves in water, only a small fraction of the acid dissociates.
, ✔✔What are two common strong bases? - ✔✔NaOH and KOH
✔✔What is the difference between strong bases and strong acids? - ✔✔Strong bases
dissolve in water, 100% of base dissociates
Weak bases dissolve but only a small fraction dissociates
✔✔Strong acids readily donates a proton forming a ________________. - ✔✔Weak
conjugate base
✔✔A strong base readily accepts a proton forming a _______________. - ✔✔Weak
conjugate acid
✔✔How do you find pH with the known amount of H3O+ ions? - ✔✔-log[H3O+]
✔✔How do you find the H3O+ concentration if the pH is known? - ✔✔[H3O+] = 10 ^-pH
✔✔What is used to determine the concentration of an acid or base in a solution? -
✔✔Titration
✔✔What is a buffer? - ✔✔A solution where pH changes very little when acid or base is
added.
✔✔What are most buffers composed of? - ✔✔Approximately equal amounts of a weak
acid and the salt of its conjugate base.
✔✔What is the principle buffer in the blood? - ✔✔carbonic acid and bicarbonate
✔✔What are fatty acids composed of? - ✔✔Carboxyl functional groups and
hydrocarbon chains (12-20)
✔✔Naturally occurring fatty acids have an _______________ number of carbon atoms.
- ✔✔Even
✔✔What are the two essential fatty acids? - ✔✔linoleic acid and linolenic acid
✔✔What makes up waxes? - ✔✔Esters and a high molecular weight alcohol
✔✔ Monosaccharides generally have how many carbons in a chain? - ✔✔3 to 6
✔✔What is the general formula for a monosaccharide? - ✔✔Cn H2n On
QUESTIONS AND ANSWERS SURE A+
✔✔Molarity equation - ✔✔Moles of solute/liters of solution = M
✔✔What must a Bronsted-Lowry *acid* have? - ✔✔A hydrogen atom
✔✔What must a Bronsted-Lowry *base* have? - ✔✔A lone pair of electrons
✔✔What happens when a Bronsted-Lowry Acid reacts with a Bronsted-Lowry Base? -
✔✔a conjugate base is formed from the acid
a conjugate acid is formed from the base
✔✔What is a conjugate base? - ✔✔The product formed by loss of a proton from an acid
✔✔What is a conjugate acid? - ✔✔The product formed by gain of a proton by a base.
✔✔What is the difference between a strong acid and a weak acid? - ✔✔A strong acid
dissolves in water, 100% of the acid dissociates into ions
A weak acid dissolves in water, only a small fraction of the acid dissociates.
, ✔✔What are two common strong bases? - ✔✔NaOH and KOH
✔✔What is the difference between strong bases and strong acids? - ✔✔Strong bases
dissolve in water, 100% of base dissociates
Weak bases dissolve but only a small fraction dissociates
✔✔Strong acids readily donates a proton forming a ________________. - ✔✔Weak
conjugate base
✔✔A strong base readily accepts a proton forming a _______________. - ✔✔Weak
conjugate acid
✔✔How do you find pH with the known amount of H3O+ ions? - ✔✔-log[H3O+]
✔✔How do you find the H3O+ concentration if the pH is known? - ✔✔[H3O+] = 10 ^-pH
✔✔What is used to determine the concentration of an acid or base in a solution? -
✔✔Titration
✔✔What is a buffer? - ✔✔A solution where pH changes very little when acid or base is
added.
✔✔What are most buffers composed of? - ✔✔Approximately equal amounts of a weak
acid and the salt of its conjugate base.
✔✔What is the principle buffer in the blood? - ✔✔carbonic acid and bicarbonate
✔✔What are fatty acids composed of? - ✔✔Carboxyl functional groups and
hydrocarbon chains (12-20)
✔✔Naturally occurring fatty acids have an _______________ number of carbon atoms.
- ✔✔Even
✔✔What are the two essential fatty acids? - ✔✔linoleic acid and linolenic acid
✔✔What makes up waxes? - ✔✔Esters and a high molecular weight alcohol
✔✔ Monosaccharides generally have how many carbons in a chain? - ✔✔3 to 6
✔✔What is the general formula for a monosaccharide? - ✔✔Cn H2n On
