3 > Calculate the pH of each solution at 25 °C. 5 М НСI 1.0 × 10 M HCI pH = 0.01 M HNO, pH= 3. 1.0 x 10 M NaOH pH 0.1 M KOH pH =

Which of the following 1.0 M solutions would have the highest pH? Weak Acid Ka Weak Base Kb HCN 4.9 x 10-10 HONH, 1.1 x 10-8 HNO2 4.5 x 104 NH3 1.8 x 10-5 HIO 2.3 x 10-11 CHINH, 4.3 x 10-10 HBrO 2.5 x 10-9 H¸NNH₂ 1.3 x 10-6 CHCOOH 6.3 x 105 CH N 1.7 x 10-9 A KCN B C CH NHCI Nalo + D NH Br

The OH– concentration in a 1.0 × 10–3 M Ba(OH)2 solution is Group of answer choices 0.50 × 10–3 M. 1.0 × 10–3 M. 2.0 × 10–3 M. 1.0 × 10–2 M. 0.020 M.

The temperature for each solution is carried out at approximately 297 K where Kw=1.00 x 10-14-   a) 0.20 g of hydrogen chloride (HCl) is dissolved in water to make 4.5 L of solution. What is the pH of the resulting hydrochloric acid solution? Express the pH numerically to two decimal places.   b)  0.70 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 3.0 L of solution. What is the pH of this solution?   Express the pH numerically to two decimal places.

Each solution below has pH = 4.5. Which solution most effectively maintains pH between 4.0 and 5.0 upon addition of a small amount of strong acid or base? O 1.00 M NaF +0.050 M HF. K₂(HF) = 6.3 x 10-4 O 2.1 M NaH₂PO4 + 0.0085 M H3PO4. Ka1(H3PO4) = 7.5 × 10-³ 0.80 M NaNO₂ + 0.055 M HNO₂. Ka(HNO2, nitrous acid) = 4.6 x 10-4 O 1.0 M NaC7H502 +0.50 M HC7H5O2. Ka(HC₂H5O₂, benzoic acid) = 6.3 × 10-5

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1. A solution of Ba(OH)2 has a [OH-] of 0.40 M. What is the initial molar concentration of the solution? 2. A solution of LiOH has a pH of 13.68. What is the initial concentration of the solution. 3. A solution of Hbr has a [OH-]= 5.0 x 10-12 M. What is the pH of the solution? 4. The [OH-] of CsOH is 0.025 M. What is the pH of the solution? 5. What is the initial concentration of a solution of CsOH with a ph=13.68? 6. A solution of HCl has a pOH=12.08. What is the initial concentration of the solution? 7. The Ka of acetic acid is 1.8x10-5 at 25 degrees C. What is the pH of 0.25 M CH3COOH? 8. The Kb of ammonia is 1.8 x 10-5 at 25 degrees C. What is the pH of 0.25 M NH3?