【简答题】An acid-base indicator has a Ka of 3.0×10 -5 . The acid form of the indicator is red and the basic form is blue. By how much must the pH change in order to change the indicator from 75% red to 75% blu...
【简答题】What type of titration curve would be expected for the titration of a weak acid with a weak base? Is such a titration feasible?
【简答题】三重酸碱失衡(triple acid-base distce)
【单选题】《幼儿园管理条例》明确了我国幼儿园实行()
【简答题】混合型酸碱失衡(mixed acid-base distce)