The answer is A ( pure water has no free ions)
Answer:
Electrons are located in an electron cloud, which is the area surrounding the nucleus of the atom. There is usually a higher probability of finding an electron closer to to the nucleus of an atom.
Explanation:
Ionic bond I think. It is the only one related to ions.
Periodic table? I don’t really know what you’re options are since there is no picture of the drop down or anything. If you can tell me what the options are, then I can answer more accurately. What you’re describing right now is the periodic table.
The correct option is B.
A buffer refers to an aqueous solution which resist changes in pH when acids or bases are added to it. Also addition or removal of water from a buffer system does not change the pH of the system significantly. Buffers typically are made up of pairs of weak acid and their conjugate base or pairs of weak base and their conjugate acids. Maintaining the ideal pH is very important in living organisms, blood buffers help living organisms to maintain constant blood pH.