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Updated: September 30, 2026
NaOH = 1 cc. of H PO solution of which 1 cc. will precipitate 0.01227 gram of magnesium as MgNH PO . Calculate the percentage of KHC H O . !Answer!: 88.67%. A one-gram sample of sodium hydroxide which has been exposed to the air for some time, is dissolved in water and diluted to exactly 500 cc.