observations and Experimental: Name and Calculate pH Acid or l Predict: concentr
ID: 504339 • Letter: O
Question
observations and Experimental: Name and Calculate pH Acid or l Predict: concentration of Acid, base, or salt? the substance Acid 2.9 Nitric acid, .00125 Acid 11.12 Base Base Potassium hydroxide .00133 Ammonia .00120 Base 10.1 Base Acid Hypochlorous acid Acid 5.2 .00218 M 7.52 Base Salt Sodium Hypochlorite 00125 M Acid 2.9 Salt Ammonium Chloride .00142 M Acid 4.59 Carbonic Acid Acid .00144 M Hydrochloric Acid Acid 4.55 M .22 Phosphoric Acid .2 Acid Acid Sodium Hydrogen Acid 13.54 Base Carbonate .35 M Base Barium Hydroxide Base 13.3 10 M 12.7 Sodium cyanide Base Base 0510 M Conclusion: words: 17 of 575 Sec 1 Pages: 1 of 3Explanation / Answer
Ans - pH = -log [H+]
there H+ = H+ concentration in the solution
H+ con centration in nitric acid =
[H+] = .00125
pH = -log [.00125]
pH = 2.90
- for potassium hydro-oxide it is a base so it will have OH- concentration, so
OH- = .00133
pOH = -log [OH-] = -log[.00133] = 2.876
pH = 14 - pOH = 14. -2.876 = 11.123
- Ammonia is base so it will have OH- concenntration in it so OH- =.0012
pOH = -log [OH-] = 2.92
pH = 14 -2.92 = 11.08
- Hydrochloric acid it will have H+ conc. which is .00218
pH = -log [H+] = -log[H+] = 2.6
It has 2H+ = so 2 x2.6 = 5.2
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