Which of the following describes the relationship between acid strength and ka value for weak acids?

a. when the ka decreases, the acid strength increases.

b. when the ka increases, the acid strength increases.

c. when the ka increases, the acid strength decreases.

d. when the ka increases, the acid strength is unchanged.

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

How do you lengthen a pattern piece? (family and consumer science, sewing)

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.