In this experiment, we are using ethanol + TEOS to generate opals. Describe how changing the concentration or temperatur

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In this experiment, we are using ethanol + TEOS to generate
opals. Describe how changing the concentration or temperature
affects particle size. Explain the
observed trend using thermodynamic arguments (free energy of
particles, equilibrium.
Students who varied concentration. Silica particles are prepared
using the Stöber method using 0.01 mol TEOS as described in
this experiment and the reaction was
stirred for 3 hours. After 3 hours the amount of TEOS is increased
to 0.05 mol for another 3 hours. What size do you expect the
particles to be? Explain