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Show Attempt History Current Attempt in Progress * Your answer is incorrect. Identify the electrophilic centres in the following molecule: eTextbook and Media N Save for Later 3 J+ 69559 Type numbers of all of the electrophilic centres in ascending order separated by a comma, if there is no electrophilic centres in this molecule type "None". Do not use numbers in written form. Do not include any spaces in your submitted answer. 6 75000 Attempts: 1 of 3 used Submit Answer
Current Attempt in Progress The pH of an NH4+/NH3 buffer solution is 8.312. Calculate the acid/conjugate base ratio for the solution. Kb for NH3 is 1.8E-5. i eTextbook and Media. Hint Save for Later
Ammonia is a convenient buffer system in the slightly basic range. (a) What is the pH of a buffer solution containing 23 g of NH4Cl dissolved in 1.00 L of 0.919 M NH3? pH = i (b) How many moles of acid are required to change the pH of this solution by 0.05 pH units? (c) Suppose 5.8 mL of 12.6 MHCI solution is added to 467 mL of the solution of Part (a). Calculate the new pH. pH = mol eTextbook and Media)
View Policies Current Attempt in Progress The pH of an acetic acid-acetate buffer is 4.58. What is the [A]/[HA] concentration ratio? i eTextbook and Media Hint
The normal boiling point of ethane is 184 K, at which AH = 15.5 kJ/mol. vap Part 1 Correct. Determine AS vap for ethane at its normal boiling point. J'mol ¹K1 84.2 eTextbook and Media Hint Part 2 Attempts: 1 of 3 used
Part 2 Correct Determine AG vp for ethane at its normal boiling point. 0 kJ'mol¹ Attempts: 1 of 3 used
Part 3 Incorrect. Estimate AG vap for ethane at 30 °C. kJ'mol-1 i -10.0 Save for Later Last saved 4 hours ago. Saved work will be auto-submitted on the due date. Auto- submission can take up to 10 minutes. Part 4 Calculate the vapour pressure of ethane at -66 °C. bar Save for Later Attempts: 2 of 3 used Submit Answer Attempts: 0 of 3 used Submit Answer