Percent ionization
percent ionization for a weak acid (ha) is determined by the following formula:

percent ionization=[ha] ionized[ha] initial×100%

for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.
a certain weak acid, ha, has a ka value of 7.6×10−7.
part a
calculate the percent ionization of ha in a 0.10 m solution.
express your answer as a percent using two significant figures.

%

submithintsmy answersgive upreview part
part b
calculate the percent ionization of ha in a 0.010 m solution.
express your answer as a percent using two significant figures.

%

(a) 0.26 % (b) 0.80 %

Explanation:

(a)

Given that:

Concentration = 0.10 M

Considering the ICE table for the dissociation of acid as:-

The expression for dissociation constant of acid is:

Solving for x, we get:

x = 0.00026  M

Percentage ionization =

(b)

Concentration = 0.010 M

Considering the ICE table for the dissociation of acid as:-

The expression for dissociation constant of acid is:

Solving for x, we get:

x = 0.00008  M

Percentage ionization =

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?