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Will the following mixtures produce a BUFFER solution? 40 mL of 0.1 M HCl plus 50 mL of 0.1 M KNO2    

Will the following mixture produce a BUFFER solution? 30 mL of 0.2 M NH3 plus 30 mL of 0.2 M NaNH2

Wingardic acid is a madeup monoprotic acid that has a Ka of 5.7×10-6. Consider the titration of 36.00 mL of 0.420 M wingardic acid with 0.560 M NaOH. Note that the concentrations are not the same. Make sure sig figs are correct on your answers. Don’t round until the end. Show your work on your upload for full credit. As usual, work should follow examples as in lecture, showing BRA and/or ICE tables if appropriate and any assumptions you are making. You can use a generic HA for the acid formula. A.  The half equivalence point will be at ______ mL of titrant added and have a pH of ______? vol titrant = [v1] mL pH = [ph1] B. The equivalence point will be at ______ mL of titrant added and have a pH of ______? vol titrant = [v2] mL pH = [ph2] C.  What is the pH at the point when 30.5 mL of titrant are added? pH = [ph3]               

Based on what we learned in lecture, how many unpaired electrons would a high spin octahedral Mn0 complex have, if such a complex existed?  

Consider the made-up transition metal Rikerium, symbol Rk. Write the formula for each of the following compounds (which do not exist!): Type your answers in the provided space, using the sub T2 and superscript T2 buttons in the question menu. A.  ammonium amminepentahydroxorikerate(III)  B.  tetraaquadicyanorikerium(III) carbonate

Based on the trends for transition metals learned in lecture, which of the following is a CORRECT trend?  Recall that > means greater than. Select ALL that are correct.    

Will the following mixtures produce a BUFFER solution? A. 30 mL of 0.1 M KOH plus 15 mL of 0.2 M HF    

In the context of the following reaction, which statement is TRUE? Pt2+ +  6 OH-

Wingardic acid is a madeup monoprotic acid that has a Ka of 4.5×10-4. Consider the titration of 32.00 mL of 0.300 M wingardic acid with 0.480 M NaOH. Note that the concentrations are not the same. Make sure sig figs are correct on your answers. Don’t round until the end. Show your work on your upload for full credit. As usual, work should follow examples as in lecture, showing BRA and/or ICE tables if appropriate and any assumptions you are making. You can use a generic HA for the acid formula. A.  The half equivalence point will be at ______ mL of titrant added and have a pH of ______? vol titrant = [v1] mL pH = [ph1] B. The equivalence point will be at ______ mL of titrant added and have a pH of ______? vol titrant = [v2] mL pH = [ph2] C.  What is the pH at the point when 24.5 mL of titrant are added? pH = [ph3]               

Pteridine is a weak base with a Kb of 1.1×10-10.  A mixture of this base with its conjugate weak acid would make a buffer that would be most effective in the pH range of _________?