Farmers who raise cotton once used arsenic acid, h₃aso₄, as a defoliant at harvest time. arsenic acid is a polyprotic acid with ka₁ = 2.5 × 10⁻⁴, ka₂ = 5.6 × 10⁻⁸, and ka₃ = 3 × 10⁻¹³. what is the ph of a 0.500 m solution of arsenic acid?

Explanation:

The reaction equation will be as follows.

Hence, the expression for is as follows.

Let us assume that the concentration of both and is x.

                          x = 0.01118034

This means that the concentration of is 0.01118034.

Since, we know that the relation between pH and concentration of hydrogen ions is as follows.

              pH =

                    =

                    = 1.958

Thus, we can conclude that the pH of a 0.500 M solution of arsenic acid is 1.958.

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

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.