What is the ratio of [A−]/[HA][A−]/[HA] at pH 5.75?5.75? The pKpK of formic acid is 3.75. [A−][HA]=[A−][HA]= Draw the structure of HAHA for formic acid. Select Draw Rings More Erase Select Draw Rings More Erase Select Draw Rings More Erase C O H Draw the structure of the conjugate base for formic acid. Select Draw Rings More Erase Select Draw Rings More Erase Select Draw Rings More Erase C O H What is the fractional charge on the acid at the given pH?

The ratio of [A⁻] / [HA] is 100

Explanation:

The structure of the formic acid (Weak acid), is in the picture.

Using H-H equation, we can determine the ratio of [A⁻] / [HA] for a weak acid as Formic Acid:

pH = pKa + log₁₀ [A⁻] / [HA]

Where A⁻ is the conjugate base of the weak acid, HA.

Solving for formic acid at pH = 5.75:

5.75 = 3.75 + log₁₀ [A⁻] / [HA]

2 = log₁₀ [A⁻] / [HA]

10^2 = [A⁻] / [HA]

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa