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Only Number 4 pls Determine the pH when the following amounts of titrant is added in the following titration: Titration of 75.0mL of 0.20M methylamine

Only Number 4 pls

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Determine the pH when the following amounts of titrant is added in the following titration: Titration of 75.0mL of 0.20M methylamine (CH3NH2,Kb=4.4104) with 0.25MHCl. What is the pH of the solution after addition of 0.00mL acid titrant

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