When we add Nacl to a solution of HCL in water does the PHof the solution Increase becauseof increased Cl ions

Question

does the PH of a solution of Hcl increase becuase of the addition
of Nacl. Because as far as I know according to lechatleirs principle the added nacl dissociates into cl- ions and as the concentration of cl- ions increases the dissociation of Hcl decreases and the ph raises.

Answer 1

For a simple level of Chemistry:
HCl is a strong acid. Thus it dissociates 100% and you don't have to worry about Le Chatelier's principle. So the pH will not be affected.

For advanced Chemistry
pH= -log (αH+) where αH+ is the H+ activity or effective concentration and α =γ*C with 0<γ<1. γ is a function of the ionic strength of the solution. The higher the ionic strength the lower γ is and thus the more α deviates from C. Adding NaCl, or any other salt, increases the ionic strength of the solution. Thus, although [H+] is not affected αH+ is affected and specifically it decreases. Since pH-meters measure αH+ and not [H+], the measured pH will increase. How much? That depends on how much salt you add (how much you increase the ionic strength) but of course it is going to be much smaller (in order of magnitude) compared to when you add something that is even slightly acidic or basic.

Answer 2

The pH should stay the same since NaCl isnt a base or acid. Why would the dissociation of HCl decrease? When HCl is put into a solution it completely dissociates because it is a strong acid/strong electrolyte.

Answer 3

you probably did no longer point out "what quantity" of ethanol. i assume it replaced into rather great. The water molecules linked with the ethanol molecules and the quantity decreased hence. of path the well-known quantity extra advantageous, yet basically via lots.