A mixture is first made of 126 cm³ of a 0.212 mol.dm-3 solution of silver nitrate (AgNO3) and y cm³ of a 1.25 mol.dm-³ s

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A Mixture Is First Made Of 126 Cm Of A 0 212 Mol Dm 3 Solution Of Silver Nitrate Agno3 And Y Cm Of A 1 25 Mol Dm S 1 (81.93 KiB) Viewed 45 times

A mixture is first made of 126 cm³ of a 0.212 mol.dm-3 solution of silver nitrate (AgNO3) and y cm³ of a 1.25 mol.dm-³ solution of sodium cyanide (NaCN). Thereafter, 224 cm³ of a 0.0148 mol.dm-3 solution of potassium iodide (KI) is added to this mixture and the resulting solution is diluted 2.00 dm³. Calculate the value of y that will just prevent the precipitation of silver iodide. to (14) A 900 cm³ buffer solution of pH of 9.15 contains P mol of a weak base and Q mol of a salt of its conjugate acid. When 125 cm³ of a 0.0150 mol.dm-³ solution of sodium hydroxide was added to this buffer solution the pH changes by 0.350 pH units. If the Kb value for the weak base is 1.28 x 10-5, calculate the values of P and Q. [15]