Combination
Hope this helps :)
I would use a conversation calculator
I believe it would be CS and GE (option 3). i hope i helped ya out.
Explanation:
lease please please please please please please
Answer is: because pH value of solution is changing.
Balanced chemical reaction: NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l).
pH of sodium hydroxide solution is above seven (basic), when solution of hydrochloric acid is added, pH slowly dropping until it became neutral solution (pH is equal seven) and that is endpoint of titration.
