Hey guys....Can someone please explain to me what the general affect of adding the following acids and bases to my original test on equilibrium where I had K2CrO4 and K2Cr2O7. Observations I had made... Solution of K2CrO4 CH3COOH becomes orange H2SO4 becomes orange KOH stays yellow NH3 stays yellow Ca(OH)2 stays yellow C2H5OH no change Solution of K2Cr2O7 CH3COOH stays orange H2SO4 stays orange KOH becomes yellow NH3 becomes yellow Ca(OH)2 becomes very pale C2H5OH no change so can someone please help explain to me what the general affect of the acids and bases are? Also, i've noticed that Ca(OH)2 hadlittle effect on the equilibrium. Why is that? Lastly, in what way does OH- affect the equilibrium? Does it affect it any way?? thanks again for your help!