The scenes below depict solutions of the same ha/a- buffer (with counterions and water molecules omitted for clarity). which solutions has the greatest buffer capacity? which solutions can react with the largest amount of added strong acid?

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.