4.A 0.10 M solution of a weak acid, periodic acid (HIO4),has a pH of 4.0. Calculate the acid dissociation constant, Ka, for HIO4. Show all your work and verify anyassumptions. (10 分)

2. Suppose that the Central Bank raises the interest rate at whichthe average household can borrow and lend. Assume that thetypical household behaves according to Irving Fisher's two-periodmodel, that consumption in both periods is a normal good, andthat households are initially savers. Illustrate graphically how theincrease in the interest rate in period one affects consumption inboth periods. (10 分)

4.A 0.10 M solution of a weak acid, periodic acid (HIO₄),has a pH of 4.0. Calculate the acid dissociation constant, Ka, for HIO₄. Show all your work and verify anyassumptions. (10 分)

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