Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? Histidine+/histidine All of these H2CO3/HCO3- H2PO4-/HPO42- Histidine+/histidine All of these H2CO3/HCO3- H2PO4-/HPO42- ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The strength of an acid depends on electronegativity number of protons released number of double bonds number of neutrons gain electronegativity number of protons released number of double bonds number of neutrons gain ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Weak acids generally have pKa been seldom found in living systems values less than 1 pKa values greater than 2 that cannot be used to buffer been seldom found in living systems values less than 1 pKa values greater than 2 that cannot be used to buffer ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The lone pair electrons on oxygen in a H20 molecule carry a partial negative charge are not important for the properties of water form covalent bonds in ice carry a partial positive charge carry a partial negative charge are not important for the properties of water form covalent bonds in ice carry a partial positive charge ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following character does not apply to water? All three atoms in the water molecule readily form hydrogen bonds The covalent bonds in water are highly polarized The water molecule is asymmetric The water molecule readily forms hydrophobic interactions All three atoms in the water molecule readily form hydrogen bonds The covalent bonds in water are highly polarized The water molecule is asymmetric The water molecule readily forms hydrophobic interactions ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The pH of a solution is determined by dielectric constant of the medium concentration of salt relative concentration of acids and bases environmental effect dielectric constant of the medium concentration of salt relative concentration of acids and bases environmental effect ANSWER DOWNLOAD EXAMIANS APP
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