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Which of the following solutions contains the weakest acid? a) 2.50 M HC2H302 (K4 = 1.8...
Which of the following solutions contains the strongest acid? Select one: O a. 5.00 M HCN (Kg = 6.2 x 10-10) O b. 3.50 M H2C6H606 (Ka1 = 7.9 x10-5, Ka2 = 1.6 x 10-12). O c. 2.50 M HC2H3O2 (Ka = 1.8 x 10-5) O d. 4.00 M HOCI (K3 = 3.5 x 10-8) O e. 1.00 M HF (Kg = 7.2 x 10-4)
Given the following acids and their corresponding Ką values, predict which acid would have the strongest conjugate base? O HOCI Ka = 3.5 x 10-8 O HC2H302 Ka = 1.8 x 10-5 O HF Ka = 7.2 x 10-4 O All will be equally strong. HNO2 Ka = 4.0 x 10-4
9. A buffer solution contains 0.052 M HC2H302 and 0.025 M VaC2H302. The pH of this solution is? K, HC2H302 =1.8 X 105. a) 4.43 b) 3.25 C) 1.2 X 10-4 d) 5.57 e) 3.92 ro
Given its acid dissociation constant (Ka) which of the following is the weakest acid? A-HClO2 (1.1 × 10−2) B-HCOOH (1.8 × 10−4) C- HCN (4.9 × 10−10) D-HF (3.5 × 10−4)
7) Which one of the following is the weakest acid? A) HF (Ka = 6.8 × 10-4) B) HClO (Ka = 3.0 × 10-8) C) HNO2 (Ka = 4.5 × 10-4) D) HCN (Ka = 4.9 × 10-10) B) 5.7 x 10–2 M D) 2.9 x 10–3 M 22) Calculate the hydrogen ion concentration in a solution of iced tea with lemon having a pH of 2.87. A) 2.9x10–2M D) 2.9x10–3M B) 5.7 x 10–2 M E) 5.7 x 10–4...
10. An unknown acid was found to have a pKa value of 6.28 and a Ką value of 5.2 x 10-7. Use the table to identify the acid. Acid Name Acid Formula K, Value pk, Value Chlorous acid нсіо, 1.2 x 10-2 2.92 Monochloracetic acid HCH.CO2 1.35 x 10 3.87 Hydrofluoric acid HE 7.2 x 10-4 4.14 Acetic acid HC2H302 1.8 x 105 4.75 Carbonic acid H2CO3 4.3 x 10-7 6.37 Hypochlorous acid HOCI 3.5 x 10-8 7.46 Hydrocyanic acid...
1 ) Using the data in the table below, which conjugate acid is the weakest acid, given that all solutions (aq., 25 °C) are 0.200 M? Explain your choice! Base Kb CIO 3.3 x 10-7 CO3-2 1.8 x 10-4 HS- 1.8 x 10-7 NH2CH3 4.4 x 10-4 1b) Which of the following aqueous solutions has the lowest [OH-] (aq., 25 °C)? A) a solution with a pH of 3.0 B) a 1 x 10-4 M solution of HNO3 C) a...
need help with 42 & 44 I am trying to figure out how to make a desired buffer 42. What volumes of 0.50 M HNO2 and 0.50 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.55? 43. Consider a solution that contains both C5H5N and C5H5NHNO3. Calculate the ratio (C3H5N]/[C3H5NH+] if the solution has the following pH values: a. pH = 4.50 c. pH = 5.23 l g de to b. pH...
Which of the following acids is the weakest? The acid is followed by its Ka value. HCOOH, 6.5 x 10-5 HCIO2, 1.1 x 10-2 HNO2, 4.6 x 10-4 HIO, 2.3 * 10-11 HF, 3.5 x 10-4
20) Equal volumes of 0.2 M acetic acid, CH3COOH (K4 = 1.8 x 10 ) and 0.2 M aniline, C6H5NH2 (K) = 3.8 x 10") are mixed at 25°C. a. Which aqueous compound will have the highest concentration when equilibrium is established in the final solution? Justify your answer. b. Is the final solution acidic or basic? Justify your answer.