Al

Which of the following statements is//are correct" The following reaction occurs: 2Al + 3MnO overset(Delta)rarr Al_(2) O_(3) + 3 Mn . 108.0 g of Al and 213.0 g of MnO was heated to initiate the reaction. (Mw "of" MnO = 71 , atomic weight of Al = 13)

At what minimum pH will 10^(-3) mol of Al(OH)_(3) go into solution (V = 1L) as Al(OH)_(4) and at what maximum pH it will dissolve as Al^(3+) ? Given Al (OH)_(4)^(-) hArr Al^(3+) +4OH^(-) , K_(eq) = 1.3 xx10^(-34) Al(OH)_(3)hArr Al^(3+) +3OH^(-) , K_(sp) = 5.0 xx10^(-33)