Acid Base Titration

A titration experiment can be used to determine

• Known Concentration of Reactant

• Unknown Concentration of Reactant

• Known Concentration of Titran

• Unknown Concentration of Titran

The curve obtained by plotting pH as ordinate against volume of titrant as abscissa is known as ------------

• Preipitation Curve

• Neutralization Curve

• Standard Curve

• Calibration Curve

Which of the following is a buffer solution?

• H₂SO₄ + CuSO₄

• CH₃COOH + CH3COOH

• NaCl + NaOH

• CH₃COONa + CH₃COOH

When 100ml of 0.1 N HCl is titrated with 0.1N NaOH using phenolphthalein solution as an indicator, at the end point solution will turn ------------.

• colorless

• Blue

• Orange

• Pink

If strong acid and strong base are titrated, pH of the solution at equivalence point would be _____

• 5

• 8

• 7

• 11

_________ indicator is used for pH 8-9

• methyl orange

• methyl red

• bromocresol green

• thymol blue

Which of the following indicators is the best choice for this titration?

• Methyl orange (pH range of color change is 3.2 - 4.4)

• Methyl red (pH range of color change is 4.8 - 6.0)

• Bromothymol blue (pH range of color change is 6.1 - 7.6)

• Phenolphthalein (pH range of color change is 8.2 - 10.0)

Which of the following titrations will have the equivalence point at a pH more than 8?

• HCl and NH₃

• CH₃COOH and NH₃

• HCl and NaOH

• CH₃COOH and NaOH

Which of the following is a strong base?

• KOH

• NaCl

• NH₄OH

• CH₃COOH

In a titration of a weak acid with a strong base, the pH at the equivalence point will be _____

• equal to the pKa

• greater than 7

• less than 7

• 7