Plz answer concentration of either the h+ ion or the oh − ion is given for four aqueous solutions at 298 k.?
for each solution, calculate [h+] or [oh − ]. state whether the solution is acidic, basic, or neutral.

(a) [h+] = 8.0 * 10^-13 m
[oh − ] =

(b) [oh − ] = 4.0 * 10^-7 m
[h+] =

(c) [oh − ] = 5.0 * 10^-3 m
[h+] =

(d) [h+] = 8.0 * 10^-5 m
[oh − ] =

Explanation :

Solution for part (a) :

Concentration of =

As we know that,

Now put the value of concentration of hydrogen ion, we get concentration of hydroxide ion.

From this we conclude that, the concentration of hydroxide ion is more than the hydrogen ion that means the solution is basic in nature.

Solution for part (b) :

Concentration of =

As we know that,

Now put the value of concentration of hydroxide ion, we get concentration of hydrogen ion.

From this we conclude that, the concentration of hydrogen ion is more than the hydroxide ion that means the solution is acidic in nature.

Solution for part (c) :

Concentration of =

As we know that,

Now put the value of concentration of hydroxide ion, we get concentration of hydrogen ion.

From this we conclude that, the concentration of hydroxide ion is more than the hydrogen ion that means the solution is basic in nature.

Solution for part (d) :

Concentration of =

As we know that,

Now put the value of concentration of hydrogen ion, we get concentration of hydroxide ion.

From this we conclude that, the concentration of hydrogen ion is more than the hydroxide ion that means the solution is acidic in nature.

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the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.