Water, pH and Macromolecules Polyprotic acids such as H3PO4, can act as acid-base buffers only in combination with polyprotic bases at pH values around any of their pKa's at pH values around neutrality if their concentration is kept low only in combination with polyprotic bases at pH values around any of their pKa's at pH values around neutrality if their concentration is kept low ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Buffer solutions are rarely found in living systems will always have a pH of 7 cause a decrease in pH when acids are added to them. tend to maintain a relatively constant pH. are rarely found in living systems will always have a pH of 7 cause a decrease in pH when acids are added to them. tend to maintain a relatively constant pH. ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following statements about covalently bonded molecules is false? The chemical bonds that hold the molecule together are relatively strong Such molecules often result from the interaction of ionized atoms Noncovalent bonds may also be present, especially if the molecule is large Electrons are shared between the atoms that make up the molecule The chemical bonds that hold the molecule together are relatively strong Such molecules often result from the interaction of ionized atoms Noncovalent bonds may also be present, especially if the molecule is large Electrons are shared between the atoms that make up the molecule ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The effectiveness or capacity of a buffer solution can be affected by both (a) and (b) concentration of the conjugate base to the weak acid temperature of buffer components molar concentration of the buffer components both (a) and (b) concentration of the conjugate base to the weak acid temperature of buffer components molar concentration of the buffer components ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A solution with pH = 5 is __________ than a solution with pH = 7. 10 times more acidic 2 times more basic 10 times more basic 100 times more acidic 10 times more acidic 2 times more basic 10 times more basic 100 times more acidic ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following alcohols would be most soluble in water? octanol butanol ethanol methanol octanol butanol ethanol methanol ANSWER DOWNLOAD EXAMIANS APP
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