Hypochlorous acid (HOCl) (bleach) is being used to disinfect hospital surfaces. The total concentration of OCl-containing species is 5 × 10-4 M. The bleach is more effective in the HOCl form than the OClform. Therefore, you are targeting to have 99% of the total OCl-containing species in the HOCl form and 1% as OCl- . What pH should you use to achieve these concentrations?

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

i don,t know so just answer mine

plasma - state of matter made up of electrically charged particles

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.