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Water, pH and Macromolecules

Water, pH and Macromolecules
The strength of an acid depends on

number of double bonds
number of protons released
number of neutrons gain
electronegativity

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Water, pH and Macromolecules
The effectiveness or capacity of a buffer solution can be affected by

both (a) and (b)
molar concentration of the buffer components
temperature of buffer components
concentration of the conjugate base to the weak acid

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Water, pH and Macromolecules
Who discovered and described the blood groups (ABO) classification?

Karl Hooper
Otto Warburg
Theodor Kocher
Karl Landsteiner

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Water, pH and Macromolecules
Polyprotic acids such as H3PO4, can act as acid-base buffers

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

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Water, pH and Macromolecules
The elements oxygen, nitrogen, and carbon

All of these
contain protons and neutrons in their atomic nuclei
are common elements in the molecules that make up living organisms
can all form covalent bonds with other elements

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Water, pH and Macromolecules
Molecules in which the atoms are held together by __________ bonds have the strongest chemical linkages.

noncovalent
covalent
hydrogen
ionic

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MORE MCQ ON Water, pH and Macromolecules

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