Pb(H2O)42+ (aq) + 2 I- (aq) ⇌ PbI2 (s) + 4 H2O (l) Say if the following statement about this equilibrium system is true or false: If the PbI2 (s) is slightly soluble in hot water (but not in cold) it means that the above reaction is ENDOTHERMIC.   A. True B. Fals

5) Find the concentration of H30*(aq) in a 1.75 M solution of lactic acid, HC3H5O3, at 25°C. Ka= 1.38 x 10*. 6) Write the equilibrium expression for the ionization of HOI, and calculate the concentration of HOI(aq) in solution if [H3O*]=2.3 x 10° M and pKa = 10.7 at 25°C.

Please answer.

Predict the direction in which the equilibrium will lie for the reaction: HF + ClO2− ⇆ HClO2 + F− Ka (HF) = 7.2 x 10−4; Ka (HClO2) = 1.1 x 10−2 a. to the left b. none of thses c. in the middle d. to the right