Mass of NaC_2H_3O_2 middot 3H_2O (FW = 136 g/mol) ______________ pH of Original
ID: 495685 • Letter: M
Question
Mass of NaC_2H_3O_2 middot 3H_2O (FW = 136 g/mol) ______________ pH of Original buffer solution ____________ pH of Buffer + HC1 ______________ pH Buffer + NaOH ____________ Mass of NaC_2H_3O_2 middot 3H_2O (FW = 136 g/mol)______________ Moles of Na_2C_2O_2 middot 3H_2O ______________ Concentration of NaC_2H_3O2 middot 3H_2O (in moles/L)______________ Volume of HC_2H_3O_2 used ____________ Moles of HC_2H_3O_2 used _________________ Concentration of HC_2H_3O_2 (in moles/L)____________ Calculate pH of original buffer (show calculations below)_______________Explanation / Answer
pH of the original buffer can be calculated by Hinderson Hasselbalch equation :
pH = pKa + log [acetate/acetic acid]
= 4.74 + log [0.026/0.0264]
= 4.73