Use the References to access important values if needed for this question. The pOH of an aqueous solution of 0.580 M nitrous acid, ( Ka (HNO2) = 4.5 × 10-4) is
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- Use the References to access important values if needed for this question. The pH of an aqueous solution of 0.580 M acetylsalicylic acid (aspirin), (Ka (HC9H7O4) = 3.00 x 10^-4) isDiscuss the justification for this statement: “Although one does not normally regard NH+4 as an acid, it is actually only slightly weaker as an acid than hydrocyanic acid, HCN, in aqueous solution.”The pH of an aqueous solution of acetic acid (CH3COOH) is 2.0. What is the initial molar concentration of CH3COOH, if its acid ionization constant is Ka = 1.8×10–5?
- The ionization constant, Ka, for dichloroacetic acid, HC2HO2Cl2 , is 5.0 × 10‑2. What is the pH of a 0.15 molar solution of this acid?At 250°C, the equilibrium constant for the dissociation of water is 10–11.16. At this temperature, what is the pH of a neutral solution?Acidic water can be treated with basic substances to increase the pH, although such a procedure is usually only a temporary cure. Calculate the minimum mass of lime, CaO, needed to adjust the pH of a small lake 1V = 4 * 109 L2 from 5.0 to 6.5. Why might more lime be needed?
- The value for Kw is 1.0 X 10-14 in all aqueous solutions, regardless of pH. Thus, the value for Kw in vinegar (5 M aqueous acetic acid) is __________. 1.0 X 10-14 2.5 X 10-3 5.0 X 10-14 1.0 X 10-7Calculate the pH of a solution prepared by dissolving 1.75 g of sodium acetate, CH3COON,, in 53.5 mL of 0.15 M acetic acid, CH3COOH(aq). Assume the volume change upon dissolving the sodium acetate is negligible. Ka of CH3COOH is 1.75 x 10-5.The pOH of an aqueous solution of 0.461 M hydrofluoric acid is .
- The pOH of an aqueous solution of 0.354 M nitrous acid is .Calculate the pH and pOH of a solution resulting from dissolving 0.75 grams of perchloric acid in enough water to obtain a final solution of 1500 mL. Take into account that for each mole of perchloric acid it dissociates in the aqueous medium, releasing 1 mole of hydrogen ions.Calculate the pH of a solution prepared by dissolving 1.15g of sodium acetate, CH3COONa, in 95.5 mL of 0.10 M acetic acid, CH3 COOH(aq). Assume the volume change upon dissolving the sodium is negligible. Ka of CH3COOH is 1.75 x 10-5.