For each of the following salts, write the dissociation reaction of the hydrolysis reactions for each of the ions produced. Lastly, indicate whether the aqueous solution of the salt will be acidic, basic, or neutral.. MOU Zn(NO3)2 K2504 K2503
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Write dissociation and hyrolysis reaction for each ion produced. Is it acidic, basic or neutral.
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- A physician wishes to prepare a buffer solution at pH = 3.82 that efficiently resists changes in pH yet contains only small concentrations of the buffering agents. Determine which one of the following weak acids, together with its sodium salt, would probably be best to use: m-chlorobenzoic acid, Ka= 1.04 × 10-4 ; p-chlorocinnamic acid, Ka=3.89 × 10-5 ; 2,5-dihydroxybenzoic acid, Ka = 1.08 ×10-3 ; or acetoacetic acid, Ka= 2.62 × 10-4 . Explain.A piece of magnesium metal was reacted with each of the following acids: 3 M HCl, 3 M acetic acid (Ka=1.8 • 10-5) and 3 M HF (Ka=6.8•10-4). Rank this acids in decreasing order of reactivity. Explain as well.IN QUALITATIVE ANALYSIS OF GROUP 3 CATIONS , COMPLETE THIS TABLE AND WRITE THEIR CHEMICAL REACTIONS. Group IIICations ConfirmatoryReagent Result/Observation SubstanceFormed Inference Cr3+ BaCl2 pale yellow precipitate BaCrO4) confirms the presence of Cr3+ Al3+ acetic acid+H2O +stir + catechol violet blue solution aluminum acetate confirms the presence of Al3+ Fe3+ NH3 NaOH and 3% H2O2 solution red-brown precipitate Fe (OH)3 Confirmation of Fe3+ Ni2+ dimethylglyoxime rose-red precipitate Ni [ONC(CH3) C(CH3) NOH]2 confirms the presence of Ni2+ Co+2 Mn+2 Zn +2
- Your research advisor asks you to prepare a buffer solution at pH = 12.5 with capacity of about 0.100 M. Given the following solutions available (of any concentration), determine possible concentrations of the best conjugate species for this solution. Acetic acid: The pKa = 4.74; hypochlorous acid: pKa = 2.06; methylamine: pKb = 3.36.In the basic medium, write the compound that gives 1 mol of acetone and 1 mol of acetic acid when heated with KMnO4. Write the product (s) that will occur as a result of the reaction of this compound with 1 mole of HBr.QUALITATIVE ANALYSIS OF GROUP II CATIONS TO DO: Draw a schematic diagram showing the result in each step. COMPLETE THE TABLE BELOW Procedure: Place 20 drops of each of 0.2M CuSO4 in a centrifuge tube. Then add 5 drops of freshly prepared 6M (NH4)2S to each centrifuge tube. Record your observation. Centrifuge the mixtures for 3 mins. and decant the supernatant liquid. Add 10 drops of DI water and 10 drops of 6M HNO3. Stir and boil the mixture in a hot water bath for 5 mins. centrifuge the mixture for 3 mins. Decant the supernatant solution from procedure 3. Discard the To each of the supernatant liquid, add 6 drops of 6M H2SO4. Allow themixtures to cool and 5 drops of DI water. To the mixtures in procedure 4, add few drops of concentrated NH3 until the solution becomes basic. Confirm using a litmus paper. Record your observation. Add 1 drop of 5M NaOH and 1 drop of 0.1 M SnCl2 to the centrifuge tube containing Bi3+ ion , centrifuge and decant the supernatant liquid. To the solution…