The Skin of a red grape is arguably the most important ingredient of red wine. Because the pulp of the grape is colorless, the tannins and color compounds of the skin are necessary to give red wine its beautiful color. The pigment is transferred into the wine when the skins are left with the juice during fermentation.
According to the solubility rules, all silver salts are insoluble in water with the exception of silver nitrate, silver acetate and silver sulfate. Therefore, AgBr will precipitate out. The other compound Mg(NO 3) 2 will remain in solution because all nitrates, (NO 3) - , are soluble in water.ccording to the solubility rules, all silver salts are insoluble in water with the exception of silver nitrate, silver acetate and silver sulfate. Therefore, AgBr will precipitate out. The other compound Mg(NO 3) 2 will remain in solution because all nitrates, (NO 3) - , are soluble in water.
The NO3- anion is the conjugate base of a strong acid (HNO3) and is therefore pH-neutral. 608 Chapter 15 Acids and Bases (c) The CH3NH3+ ion is the conjugate acid of a weak base (CH3NH2) and is therefore acidic.The CH3NH3NO3 solution will be acidic. The NaCHO2 solution will be basic.o determine the overall acidity or basicity of the solution, compare the values of Ka for the acidic cation and Kb for the basic anion. The F-ion is the conjugate base of a weak acid and is therefore basic. basic anionacidic cationNH4F Ka(NH4+) =KwKb(NH3)=1. Since Ka is greater than Kb, the solution is acidic.