Derive the henders on- hasselbalch equation for the acid ioniza tion of a weak acid ha and use this equation to construct a concentration ph profile for the essential amino acid phenyla lanine, the structure of which is given below. the following are relevant pka and pi values: pkaj 2.58; pka 9.24; pi 5.48. in all cases clearly identify and label the structures involved in each acid ioniza tion step. (12 ma versus

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alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

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