Question

5. [10 pts] Rank the following 10 solutions from lowest pH to highest Rhe i. 2.0 M hydrochloric acid ii. 5.0 M hydrochloric acid iii. 3.0 M sodium hydroxide iv. 2.0 M calcium hydroxide v. 2.0 M hydrofluoric acid vi. 2.0 M very weak base vii. 50.0 mL of deionized water viii. After 50.0 mL of Solution I is titrated with 50.0 mL of Solution 11 ix. After 50.0 mL of Solution I is titrated with 50.0 mL of Solution III X. After 50.0 mL of Solution I is titrated with 50.0 mL of Solution IV Example Answer: Lowest pH i < i <li civ <y = vi < vii < Vii = ix <X Highest pH You may use the space below to organize your thoughts/perform any mini-calculations (You don't have to calculate the exact pH of each solution to answer this question.)

Answer 1

The onder of pH will be as follows: (viiiLiLulvin LviLixLxLiiliv a(OH)2 2 (M) Ca Colt), is of highest pH, because I mol contains 2 mol of Oh so, it is more sarrie than 3 M) On Nao H. Between ix &x , x is more basie because it is the titration with Ca (OH)₂ (of same volume, 50 m2). viix neutral pH ~ 7. is weak bore, pH ~ 8-9 He is weak acid than hal, so, ilu it is 5 (M) HU viii) is mixture of 2 (M) & 5 (M) He, so resultant solution will be of less strength them 5 (M).