What is the value of the Ksp for calcium hydroxide if phenolphthslein is used as an indicator?
if you are titrating HCl into Ca(OH)2 it will take more HCl to get to Methyl orange ‘s color change @ pH about 4 …. than the amount of HCl it will take to get to phenolphthalein’s color change @ pH about 8 using methyl orange would imply that there would be more [OH-] which would result in getting a larger Ksp than the usual 5.5×10–6 such as a 5.6 e-6 using phenolphthalein, requires less HCl, & would give a smaller Ksp than the usual 5.5×10–6 such as a 5.4 e-6 ======================================… on the other hand if you are titrating Ca(OH)2 into the HCl it will take less Ca(OH)2, to get to Methyl orange ‘s color change @ pH about 4 ….
