Find the percent ionization of a 0.175 M CH3CH2CO2H solution. The Ka for CH3CH2CO2His 1.3 x 10^-5. I am getting [H+] =Sqr (.175)(1.3*10^-5)

Then taking [H+]/ [acid] initial

What am I doing wrong here?

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]