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53) Calculate the pH of a buffer that is 0.274 M HBO, and 0.206 M KH,BO,...
53) Calculate the pH of a buffer that is 0.274 M HBO, and 0.206 M KH,BO, The K for H,BO, is 7.3 * 10".
A buffer solution is 0.392 M in HCN and 0.206 M in KCN. If K, for HCN is 4.0x1010, what is the pH of this buffer solution?
A 1.33 L buffer solution consists of 0.274 M propanoic acid and 0.200 M sodium propanoate. Calculate the pH of the solution following the addition of 0.065 mol HCl. Assume that any contribution of the HCl to the volume of the solution is negligible. The Ka of propanoic acid is 1.34×10−5
If the Kh of a weak base is 7.3 x 10-6, what is the pH of a 0.31 M solution of this base? pH =
2. Calculate the pH at the equivalence point when 30 mL of 0.206 M CH3CH2NH2, is titrated with 0.559 M HBr.
Calculate the pH of a buffer made from mixing 7.3 mL of 0.229 M NaC2H3O2 and 12.2 mL of 0.458 M HC2H3O2. The Ka of HC2H3O2 is 1.8 x 10^-5.
Calculate the pH of each of the following strong acid solutions. (a) 0.00456 M HBO pH = (b) 0.513 g of HBr in 14.0 L of solution pH = (c) 33.0 mL of 8.60 M HBr diluted to 2.10 L pH = (d) a mixture formed by adding 60.0 mL of 0.00348 M HBr to 30.0 mL of 0.00213 M HBr pH =
Calculate the pH of a buffer that is 0.020 M HF and 0.040 M LiF. The K a for HF is 3.5 × 10 -4. 2.76 2.06 3.46 4.86 3.76
++ ++ ++ ++ ++ If the Kh of a weak base is 7.7 x 10-6, what is the pH of a 0.48 M solution of this base? pH = Enough of a monoprotic weak acid is dissolved in water to produce a 0.0136 M solution. The pH of the resulting solution is 2.42. Calculate the K, for the acid. Kg =
a) Calculate the pH of a buffer that is 0.20 M NH3 and 0.20 M NH4Cl Correct? b) Calculate the pH after addition of 10 mL 0.10 M HCl to 65 mL of the buffer? c) Calculate the pH after addition of 5 mL of 1.0 M LiOH to 200 mL of the buffer?