2007-03-01 22:44:54 · 5 answers · asked by PUBIC L 1 in Science & Mathematics ➔ Chemistry
The half-life of a quantity subject to exponential decay is the time required for the quantity to decay to half of its initial value. The concept originated in the study of radioactive decay, but applies to many other fields as well, including phenomena which are described by non-exponential decays.
2007-03-02 01:10:51 · answer #1 · answered by Mike 1 · 0⤊ 0⤋
The half life of ANYTHING is the lenght of time after which anything will no longer be what it started out as, but will be broken down into something else.
So, if a chemical will naturally decay nuclearly into some other chemical, the half life tells us when half of it will be what it started out to be and the other half will have changed into that other chemical.
2007-03-01 22:49:27 · answer #2 · answered by Robert G 5 · 1⤊ 0⤋
Also, to know the half-life of a chemical it would be good to know the PH of the liquid it was mixed with. Some chemicals will have a greatly reduced half-life if the PH is too high or too low.
2015-01-27 09:59:00 · answer #3 · answered by Anonymous · 0⤊ 0⤋
By dfinition, the half life of a solution ( or chemical) is the amount of time taken for the concentration to decrease to half its initial value.
2007-03-02 00:07:31 · answer #4 · answered by Ieshwar 2 · 0⤊ 0⤋
Half life of rxn means the time after which half the reactant is consumed.
2007-03-01 22:55:34 · answer #5 · answered by know it 2 · 1⤊ 0⤋