do all parts please 1. Pyrophosphoric acid, H4P207, is a polyprotic acid; at 25C, K1 = 1.2x10-1,

do all parts please

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1. Pyrophosphoric acid, H4P207, is a polyprotic acid; at 25°C, K₁1 = 1.2x10-1, Kaz = 7.9x10-³, K₁3 = 2.0×10-7, K₁4 = 4.8x10-10. a. (2 marks) 25.0 mL of 0.25 M solution of H4P₂O7 is titrated with 0.25 M NaOH. What is the pH after 100.0 mL of NaOH is added? b. (2 marks) A buffer is made by adding 540 mL of 1.0 M Na₂H₂P₂07 to 210 mL of 1.0 M NaH3P₂07. What volume of 1.3 M HCl can be added before the pH of the buffer changes by 0.50 pH units? 1. Pyrophosphoric acid, H4P207, is a polyprotic acid; at 25°C, K₁1 = 1.2x10-1, Kaz = 7.9x10-³, K₁3 = 2.0×10-7, K₁4 = 4.8x10-10. a. (2 marks) 25.0 mL of 0.25 M solution of H4P₂O7 is titrated with 0.25 M NaOH. What is the pH after 100.0 mL of NaOH is added? b. (2 marks) A buffer is made by adding 540 mL of 1.0 M Na₂H₂P₂07 to 210 mL of 1.0 M NaH3P₂07. What volume of 1.3 M HCl can be added before the pH of the buffer changes by 0.50 pH units?