Question

ACIDS AND BASES Identifying the major specles In weak acid or weak base equilib... The preparations of two aqueous solutions are described in the table below. For each solution, write the chemical formulas of the major species present at equilibrium. You can leave out water itself. Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act as bases in the 'bases formulas of the species that will act as neither acids nor bases in the 'other' row. row, and the You will find it useful to keep in mind that HCH CO, is a weak acid. acids: 0.2 mol of NaOH is added to 1.0 L of a 0.2 MHCH , CO bases: X solution. other: 0.60 mol of NaOH is added acids: to 1.0 L of a solution that is 1.3 M in both HCH CO, bases: and NaCH,CO other:

Answer 1

# CH₃COOH + NaOH CH₃COONa + H₂O Acid : CH₃ COOH. Base & Naoh. Other : CH₃COONa . Moles of HCH₂CO = concentration & Volume (L) = 0.2 M XIL = 0.2 mol. CH₃COOH + NaOH CH₃ 100 [ 0.2 ml 0.2 mel. -0.2 - 0.2 +0.2 +0.2 mol. C At equilibrium CH₃COONa or CH₂C00 will present # Moles of HCH₂ CO₂ = 1.3MxIL = 1.3 mel. Moles of Na CH₂ CO₂ = 1.3m xlL = 1.3mol. Acid - HCH₂ CO₂ Base = NO OH, Other - NaCH₃ CO₂ CH₃COOH + NaOH CH₃COONa tho I 1.3 mil 0.6 1.3 mel. -0.6 -0.6 +0.6 O 0.7 mol 1.g mel C At equilibrium major species is CH₃COONa ,