Chapter 14c Volumetric Analysis Errors

A 0.100 M standard solution of HCl is titrated into a 20.00 mL aliquot of an unknown Na₂CO₃ solution to determine its concentration.

The burette was rinsed with deionised water, the pipette with the Na₂CO₃ solution and the conical flask with deionised water. The calculated concentration for Na₂CO₃ will be

• Overestimated

• Underestimated

• the True Value

A 0.100 M standard solution of HCl is titrated into a 20.00 mL aliquot of an unknown Na₂CO₃ solution to determine its concentration.

The burette was rinsed with HCl solution, the pipette with the deionised water and the conical flask with deionised water. The calculated concentration for Na₂CO₃ will be

• Overestimated

• Underestimated

• the True Value

A 0.100 M standard solution of HCl is titrated into a 20.00 mL aliquot of an unknown Na₂CO₃ solution to determine its concentration.

The burette was rinsed with HCl solution, the pipette with the Na₂CO₃ solution and the conical flask with deionised water. The calculated concentration for Na₂CO₃ will be

• Overestimated

• Underestimated

• the True Value

A 0.100 M standard solution of HCl is titrated into a 20.00 mL aliquot of an unknown Na₂CO₃ solution to determine its concentration.

The burette was rinsed with HCl solution, the pipette with the Na₂CO₃ solution and the conical flask with Na₂CO₃ solution. The calculated concentration for Na₂CO₃ will be

• Overestimated

• Underestimated

• the True Value

The picture shown indicates

• high accuracy & high precision.

• low accuracy & low precision.

• high accuracy & low precision.

• low accuracy & high precision.

The picture shown indicates

• high accuracy & high precision.

• low accuracy & low precision.

• high accuracy & low precision.

• low accuracy & high precision.

The picture shown indicates

• high accuracy & high precision.

• low accuracy & low precision.

• high accuracy & low precision.

• low accuracy & high precision.

In the picture shown, the red arrows indicate which type of error is demonstrated?

• burette

• parallax

• eye-line

• height