Question 2 a). Evaluate effectiveness factor (h) for a first order irreversible reaction at three values of Thiele's modulus (f) in the range f- 0.8 to f 1.2 and plot h versus f in this range. Assume spherical catalyst pellets: The graph will be useful in part (b) of this question b). Laboratory tests involving a first order catalyst reaction have shown that Thiele's modulus for near-spherical pellets with an equivalent diameter of 3.0 mm is 10.0. How fine would you have to grind the catalyst to obtain a reaction rate which was 95% of the intrinsic reaction rate at the same reaction condition? Why might pellets of this size be unsuitable for use in a full-scale packed-bed reactor? Assume isothermal pellets