- What do titration results show?
- Which of these must be known accurately about the titrant?
- What is the role of indicator in titration?
- What is the conclusion of titration?
- Why is titration not accurate?
- How does temperature affect titration?
- Does indicator affect titration?
- How does air bubbles affect titration?
- What is the role of indicator in a reaction?
- What is end point in titration?
- Why is phenolphthalein the best indicator?
- What happens if you add too much indicator to a titration?
- Why is it important to be so precise when doing your titrations?
- How do you ensure accuracy in a titration?
- Which titration is more accurate?
What do titration results show?
An acid -alkali titration can be used to find out what volume of acid (or alkali) of known concentration exactly neutralises a known volume of alkali (or acid) of unknown concentration.
This concentration can then be calculated.
To obtain valid results, it is important that measurements are precise and accurate ..
Which of these must be known accurately about the titrant?
Titration is the slow addition of one solution of a known concentration (called a titrant) to a known volume of another solution of unknown concentration until the reaction reaches neutralization, which is often indicated by a color change. Therefore, these must be known accurately about the titrant: Initial Volume.
What is the role of indicator in titration?
The role of indicator in titration is to detect the endpoint of the titration. When the colour of the solution changes, it indicates that the concentration of the chemical specie has reached a critical range. This change in colour is possible with the help of indicators.
What is the conclusion of titration?
Conclusion The technique of titrating is important in volumetric analysis and can help determine the concentration of an unknown. Our unknown concentration was NaOH. The theoretical concentration for our titrant was 0.1 M however (as seen in the results section) our average molarity for NaOH was 0.0863.
Why is titration not accurate?
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.
How does temperature affect titration?
The overall temperature change is small, but measurable, especially with a Fast Response Temperature Probe. This change in temperature provides a great opportunity to perform a thermometric titration. The temperature will increase as long as the reaction continues, then decreases as excess titrant is added.
Does indicator affect titration?
Yes. You have to add water to your titration flask, then add the indicator, then titrate very very carefully, drop by drop, until the indicator changes colour to the colour you are expecting at the end point of your main titration.
How does air bubbles affect titration?
If an air bubble is present during a titration, volume readings may be in error. … The tip should be clean and dry before you take an initial volume reading. When your buret is conditioned and filled, with no air bubbles or leaks, take an initial volume reading.
What is the role of indicator in a reaction?
The common application of indicators is the detection of end points of titrations. The colour of an indicator alters when the acidity or the oxidizing strength of the solution, or the concentration of a certain chemical species, reaches a critical range of values.
What is end point in titration?
end point: the point during a titration when an indicator shows that the amount of reactant necessary for a complete reaction has been added to a solution.
Why is phenolphthalein the best indicator?
A strong acid- strong base titration is performed using a phenolphthalein indicator. Phenolphtalein is chosen because it changes color in a pH range between 8.3 – 10. It will appear pink in basic solutions and clear in acidic solutions.
What happens if you add too much indicator to a titration?
If a large amount of indicator is used, the indicator will effect the final pH, lowering the accuracy of the experiment.
Why is it important to be so precise when doing your titrations?
Precision relates the closeness of the measurements themselves. In any analytical experiment, one strives for both accuracy and precision to validate the results. In a titration an analyst titrates a solution of unknown concentration with a solution of known concentration (aka a standard solution).
How do you ensure accuracy in a titration?
Terms in this set (9)Meniscus at eye level. To avoid parallax error.White tile. To see end point clearer.Remove funnel before titrating. Increases the vol making the titre smaller.Dropwise addition. … No bubbles in pipette & burette at the tip. … Swirling during titration. … Few drops of indicator. … Repeat the titration.More items…
Which titration is more accurate?
Standardization is a procedure which normalizes the titration system and provides the most accurate titrant concentration. This value is critical in the final calculation for the analyte content. If the concentration is not known precisely, it can throw off a result.