Food colors are organic compounds that are soluble in water, but can also bind to various things. One thing they bind to
Posted: Wed Jul 06, 2022 11:00 am
Food colors are organic compounds that are soluble in water, butcan also bind to various things. One thing they bind to is silicagel, SiO2. Consider the following two experiments: An equilibrium is established between some silica gel, water, andblue food color so that both the water and the silica gel have anoticable amount of blue.
Control: One portion of the initial solution is filtered and thecolor intensity in the water and on the solid silica gel aremeasured.
Experiment A: A second portion of the initial solution has thevolume doubled by adding water. The reequilibrated mixture is againfiltered and the color intensities determined.
Experiment B: A third portion of the initial solution has theamount of silica get it contains doubled by adding fresh silicagel. The reequilibrated mixture is again filtered and the colorintensities determined.
Which of the following statements is true?
a)Experiment A: The intensity of the color in the waterdecreases, but the intensity of the color on the silica gel staysthe same.
Experiment B: The intensity of both colors that were measureddecreases.
b)Experiment A: The intensity of both colors that were measureddecreases.
Experiment B: The intensity of the color in the water stays thesame, but the intensity of the color on the silica geldecreases.
c)Experiment A: The intensity of the color in the waterdecreases, but the intensity of the color on the silica gel staysthe same.
Experiment B: The intensity of the color in the water stays thesame, but the intensity of the color on the silica geldecreases.
d)Experiment A: The intensity of both colors that were measureddecreases.
Experiment B: The intensity of both colors that were measureddecreases.
Control: One portion of the initial solution is filtered and thecolor intensity in the water and on the solid silica gel aremeasured.
Experiment A: A second portion of the initial solution has thevolume doubled by adding water. The reequilibrated mixture is againfiltered and the color intensities determined.
Experiment B: A third portion of the initial solution has theamount of silica get it contains doubled by adding fresh silicagel. The reequilibrated mixture is again filtered and the colorintensities determined.
Which of the following statements is true?
a)Experiment A: The intensity of the color in the waterdecreases, but the intensity of the color on the silica gel staysthe same.
Experiment B: The intensity of both colors that were measureddecreases.
b)Experiment A: The intensity of both colors that were measureddecreases.
Experiment B: The intensity of the color in the water stays thesame, but the intensity of the color on the silica geldecreases.
c)Experiment A: The intensity of the color in the waterdecreases, but the intensity of the color on the silica gel staysthe same.
Experiment B: The intensity of the color in the water stays thesame, but the intensity of the color on the silica geldecreases.
d)Experiment A: The intensity of both colors that were measureddecreases.
Experiment B: The intensity of both colors that were measureddecreases.