What were possible sources of error in the titration?

Several factors can cause errors in titration findings, including misreading volumes, mistaken concentration values or faulty technique. Care must be taken as the solution of the known concentration is introduced into a specific volume of the unknown through laboratory glassware such as a burette or pipette.

What can affect titration results?

The Titration Process Is Influenced by the Following Factors:

• Measuring method.
• Instrument (instrument uncertainty/abrasion of the burette)
• Electrodes (electrode uncertainty/alteration of electrodes)
• Handling.
• Balance (weighing error)
• Temperature.

Which causes error in redox titration?

The following factors contribute to the total error in redox titrations with visual indicators: the end-point error (DeltaV(T)), which arises from the difference between the potential of the equivalence point and that of the actual end-point determined by a given indicator ; the indicator consumption error (DeltaV(T)).

What are titration errors?

In a titration, the primary systematic error is the endpoint determination. The difference between the equivalence point and the measured end point is called the titration error. A visual end point is always slightly beyond the equivalence point because of the necessity of seeing the color change by eye.

How do you reduce error in a titration?

Reducing uncertainties in a titration To reduce the uncertainty in a burette reading it is necessary to make the titre a larger volume. This could be done by: increasing the volume and concentration of the substance in the conical flask or by decreasing the concentration of the substance in the burette.

How can we avoid error in titration?

Acid Base Titration Sources of Error Improvements

1. Check the calibration of the balance.
2. Verify that the primary standard is properly dried.
3. Verify the precision of the glassware.
4. Use sufficient quantities of analyte and titrant.
5. Realize the limitations of the equipment.

What are the sources of error in gravimetric analysis?

These sources are: (1) different masses of the reference cylinder and sample cylinder (an error in the readings of the electronic mass comparator), (2) leakage of the inner gas from valves of the cylinders, and (3) cooling of the gas cylinder caused by filling with high-pressure liquefied carbon dioxide gas.

What is an example of a problem that could be solved using a titration in the real world?

Titration is an analytical technique that is widely used in the food industry. It allows food manufacturers to determine the quantity of a reactant in a sample. For example, it can be used to discover the amount of salt or sugar in a product or the concentration of vitamin C or E, which has an effect on product colour.

Can titration error completely be eliminated?

Some of them are typical human errors, that can be limited by sticking to lab procedures, but as long as there is a human operator involved, they will be never completely eliminated. Some of possible cases are: Misjudging the color of the indicator near the end point – this is probably the most common one.

How do you ensure accuracy in a titration?

Terms in this set (9)

1. Meniscus at eye level. To avoid parallax error.
2. White tile. To see end point clearer.
3. Remove funnel before titrating. Increases the vol making the titre smaller.
4. Dropwise addition.
5. No bubbles in pipette & burette at the tip.
6. Swirling during titration.
7. Few drops of indicator.
8. Repeat the titration.

Do air bubbles affect titration?

Do air bubbles affect titration? Air bubbles are trapped in burette and tubes. They lead to inaccurate dosing where the system believes the bubble is titrant and gives falsely high results.

What are the 2 major types of gravimetric methods?

There are four fundamental types of gravimetric analysis: physical gravimetry, thermogravimetry, precipitative gravimetric analysis, and electrodeposition. These differ in the preparation of the sample before weighing of the analyte. Physical gravimetry is the most common type used in environmental engineering.

What are some sources of errors in titration?

Titrating at wrong temperature and wrong pH value – as several indicators are quite sensitive. Other human or equipment errors can also creep in. Human error includes using selecting the wrong reagents or using the wrong amount of indicator. Equipment error typically is in the burette, which can develop leaks over time.

What makes a titration result differ from the reality?

There are several types of errors that can make titration result differ from the reality. First, there is an intrinsic error of the method – end point is not identical with equivalence point and color changes of indicators are not instant.

Can a burette be misread in titration?

The accuracy of titration requires precise measurement of the volume of materials in use. But markings on a burette can be easily misread. One way to misread the volume is by looking at the measurement on an angle. From above, it can seem like the volume is lower, while from below, the apparent volume looks higher.

Why do you need the correct temperature range for titration?

Some reactions need correct temperature range to keep stoichiometry (avoid side reactions). Losing solution – too vigorous swirling can end in liquid splashing from the titration flask before the end point had been reached. It may also happen that some titrant lands on the table instead of inside the flask.