An amino acid is dissolved in solution at a pH which is the same as its isoelectric point True False Don't know Most of the amino acid molecules in solution will have an ionised carboxylic acid group Most of the amino acid molecules in solution will have an ionised amine group Most of the amino acid molecules in solution will exhibit a net charge of zero Lowering the pH will lower the zwitterion concentration False O Don't know True O False o Don't know Don't know True True O False 2 of 20 Liquid X has a surface tension value of 35 mNm1 and liquid Y has a surface tension value of 50 mNm1 The interfacial tension between the two liquids could be determined using the capillary rise method True False Don't know True O False O Don't know False O Don't know The cohesive forces in liquid Y are stronger than the cohesive forces in liquid X X will spread on Y more readily than Y will spread on X True The work of adhesion is the work required to separate liquid X from liquid Y at their interface True False O Don't know