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1. Write an equation for the proton-transfer reaction between a phosphate ion (PO23) and water, and determine in which direction the equilibrium is favored? By knowing the relative acid and base strengths of the species involved in the reaction, you will be able to predict the direction in which the equilibrium is favored. 2. Milk has an H3O+concentration of 4.5107M. What is the value of [OH]? is milk acidic, neutral, or basic? The OHconcentration can be found by dividing Kw by [H3O%]. An acidic solution has [H3O+]>107M, a neutral solution has [H3O]=107M, and a basic solution has [H3O+]