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Calculate the pH of a mixture containing 0.23 M HONH2 and 0.44 M HONH3Cl. (Kb = 1.1 × 10–8)
What is the pH of the solution?
pH = _______
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- Strong Acids; Calculate pH [HA]o [H;O"] pH Step 1 Calculate [H3O] based on the fact that strong acids react completely with water. Step 2 Calculate the pH using the equation: pH = -log (H;O"] What is the pH of a 1.73×10 M solution of the strong acid HC10,? HCIO,(aq) + H20(1) → C10, (aq) + H3o*(aq) [HC10], = 1.73×10-5 SubmitA solution of sodium cyanide, NaCN, has a pH of 11.30. How many grams of NaCN are in 865 mL of a solution with the same pH? Kb (CN–) = 1.7 × 10–5 mass = ___________ g *I asked this prevously and 1.81 x 10^-12 is the wrong anwser for this question, if you get that.General Chemistry 4th Edition McQuarrie Rock Gallogly University Science Books presented by Macmillan Learning The K value for acetic acid, CH, COOH(aq), is 1.8 x 10-5. Calculate the pH of a 2.60 M acetic acid solution. pH = %3D Calculate the pH of the resulting solution when 2.50 mL of the 2.60 M acetic acid is diluted to make a 250.0 mL solution. pH = Question Source: MRG - General Chemistry Publish privacy policy terms of use contact us help about us careers N EV prime video P. II
- A solution of sodium cyanide, NaCN, has a pH of 11.30. How many grams of NaCN are in 865 mL of a solution with the same pH? Kb (CN–) = 1.7 × 10–5 mass = __________ gYou are studying a clear solution and you added the pH indicator methyl violet. The colour range of the indicator methyl violet in a clear solution when changing from acidic to basic is yellow (pH 0) to blue purple (pH 1) to violet (pH 2). You initial pH of the solution when tested with a pH meter is O.2. You are going to add 250 drops of 0.1 M HCI. Please select the most appropriate answers to the following two questions. What is the initial colour of the solution at pH 0.2? What is the colour of the solution and what will the pH be after the addition of the HCI? Select 2 correct answer(s) The colour of the solution after the addition of HCI will be clear and the pH will be less than 0.2. The colour of the solution after the addition of HCI will be violet and the pH will be higher than 0.2.Calculate the change in pH that occurs when 1.10 mmol of a strong acid is added to 100. mL of the solutions listed below. Ka (CH3COOH) = = 1.75 x 10-5 a. 0.0680 M CH3COOH. Change in pH = b. 0.0680 M CH3COONa. Change in pH =
- A citrus tree can't get the nutrients it needs from the soil if its pH is above 6.5. (a) The hydrogen ion concentration of a soil sample is [H+] = 1.58 × 10−7 M. What is the pH of the soil? (Round your answer to one decimal place.)Is this soil suitable for citrus trees? Yes No (b) After the soil is amended, the pH is 5.6. Is the amended soil more acidic or less acidic than the original soil? more acidic less acidic6. a) What is the pH of pure water at 35.0 °C? At this temperature Kw = 2.042 x 10-14. b) Based on the information in part a) above, is the self-ionization of water an endothermic or exothermic process? Explain why. c) The net ionic equation for the reaction of a strong acid with a strong base is: H3O*(aq) + OH(aq) 2 H-ОФ What is the equilibrium constant for this reaction at 35.0 °C?Calculate the pH of a mixture containing 0.23 M HONH2 and 0.44 M HONH3Cl. (Kb = 1.1 × 10–8) What information do we need to calculate the pH? (Choose all letters that apply.) a. 0.23 M HONH2b. 0.44 M HONH3Clc. the major species in the solutiond. pOH = –log[OH–] and 14.00 = pOH + pHe. Kb = 1.1 × 10–8
- The pHpH scale for acidity is defined by pH=−log[H+]pH=-log[H+] where [H+][H+] is the concentration of hydrogen ions measured in moles per liter (mol/L). (A) If there are 0.0079432823472428 mol/L of hydrogen ions in a certain substance, what is the pH of this substance?pH=pH= Round your answer to at least two decimal places. (B) If there are 0.003019951720402 mol/L of hydrogen ions in a different substance, what is the pH of this substance?pH=pH= Round your answer to at least two decimal places.||| ctrl lacc shift ↑ tab caps lock VILION Mc ALE Graw HI esc K →1 Pavilion x360 fn O CHEMICAL REACTIONS Determining the molar mass of an acid by titration McCA X Eplanation g mol V An analytical chemist weighs out 0.188 g of an unknown triprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1500M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 38.4 mL of NaOH solution. Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. f1 Type here to search A https://www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IvUrTNdLZh5A8CnG03PBGuXr8iCPa7ZMmym f2 @ Z Check 2 L M W hp S ALE MCCA ALER f3 # Mc Graw 3 X alt D 4 $ 4 с x10 X R O f5 Me Graw MI % F 5 at 40 MCCA ALE ALE ● V T S f6 4- G 6 ■ T f7 B Y ♫+ & Mc 7 H raw fg MCCA ALER *. N KAA © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center |…Strong Acids; Calculate pH [HA]o [H;O"] pH Step 1 Calculate [H30"] based on the fact that strong acids react completely with water. Step 2 Calculate the pH using the equation: pH = -log [H;O¯] What is the pH of a 1.73×10M solution of the strong acid HCIO,? HCIO,(aq) + H2O(t) → C10,(aq) + H30*(aq) [HCIO4]0 = 1.73×10-5 Submit What is the concentration of hydronium ion following reaction between the acid and water? Submit Calculate the pH of the solution based on the solution to the previous question (shown below). [H;O*] = 1.73x10-5 M