The ph of a 0.30 m solution of an acid, ha, is 5.20. calculate ka of ha.

When the acid is hydrolyzed, the reaction is

HA --> H⁺ + A⁻

So,

Ka = [H⁺][A⁻]/[HA]

Apply the ICE approach:

            HA --> H⁺ + A⁻
I          0.3        0      0
C         -X         +X   +X
E      0.3-X      X       X

Ka = [X][X]/[0.3-X]

X = H⁺ = A⁻
The formula for pH is:
pH = -log[X]
5.2 = -log[X]
Solving for X,
X = 6.31*10⁻⁶

Therefore,
Ka = [6.31*10⁻⁶][6.31*10⁻⁶]/[0.3-6.31*10⁻⁶]
Ka = 1.33×10⁻¹⁰

If the water vapor content stays the same and the temperature drops, then the relative humidity increases. its vise versa.if the water vapor content stats the same and the temperature rises, the relative humidity decreases. so, yes, i'd say that temperature and humidity have a strong relationship.