Consider the GaAs etch diagram below. The left axis is for H2O2, the right axis is for H2SO4, and the bottom axis is for water. A solution of 30% H2O2, 50% H2SO4, and 20% water is made up and used for etching a GaAs wafer.
H2O2 1.0
3.0 3.3
H2O
H2SO4
Estimate the etch rate (0.6)