The standardized method of measuring this quantity is the Harned cell.
The standardized method of measuring this quantity is the Harned cell. One instrument used tomeasure this contains an internal electrode, a reference electrode, and an ion-selective glass tip. Forantimonial compounds, the Hammett function is often used instead of this quantity. Compounds likeTris, MOPS, and HEPES are designed to keep this quantity constant. Popular methods of notingchanges in this quantity involve adding (*) methyl red and bromophenol blue. A sudden jump in thisquantity occurs around the equivalence point of a standard titration, and indicators like phenolphthaleinshow changes in it by changing color. It is found by taking the negative logarithm of the concentration ofhydrogen ions. For 10 points, name this measure of acidity.
The standardized method of measuring this quantity is the Harned cell.
pH [prompt on "acidity" or "basicity"; accept pOH until "hydrogen"]