The bubble in the tip of the buret is not removed prior to performing the NaOH standardization. Will the reported concentration of the NaOH be greater than, less than, or equal to the true concentration of the NaOH if the bubble is flushed from the buret during the titration?
I think the concentration would be greater than, but I am not sure if that is correct. I know the calculated volume will be different. But will it actually change the concentration?
Of course. It will change the calculated volume and since you are measuring the volume of the titrant + the volume of the bubble, it will be larger.
Since this is a molarity of the base, you will calculate M = mols/L
The indicator will change when mols acid you're titrating is the same as mole NaOH added but volume NaOH is greater which makes the M.......?
What is chemical compound
If the bubble in the tip of the buret is not removed prior to performing the NaOH standardization, the reported concentration of NaOH will be greater than the true concentration if the bubble is flushed from the buret during the titration.
During the process of standardization, a known volume of a solution with a known concentration (standard solution) is carefully titrated against an analyte to determine its concentration. The volume of the standard solution required to neutralize the analyte is used to calculate the concentration of the analyte.
In this case, since the bubble affects the accurate measurement of the volume of standard solution dispensed from the buret, the calculated volume will be different. The bubble will displace the NaOH solution, causing an error in the volume dispensed. This error will lead to an overestimation of the concentration of NaOH because a smaller volume of NaOH will be used to neutralize the analyte, resulting in a higher reported concentration.
To obtain an accurate concentration of NaOH, it is important to ensure the bubble is removed before starting the standardization process. This can be done by gently tapping the buret to dislodge the bubble or by carefully refilling the buret to displace the bubble.
If the bubble in the tip of the buret is not removed before performing the NaOH standardization, the reported concentration of NaOH will be greater than the true concentration if the bubble is flushed from the buret during the titration.
Here's how you can understand and explain why this is the case:
During a titration, the goal is to neutralize a known volume of the analyte solution (in this case, an acidic solution) with a known concentration of the titrant (in this case, NaOH). The concentration of the titrant is determined by the volume of titrant required to reach the neutralization point.
The presence of a bubble in the tip of the buret can affect the accuracy of the titration. Without removing the bubble, the volume of NaOH delivered will be erroneously increased because part of the buret tip volume will be occupied by the bubble. This means that the reported volume of NaOH used will be higher than the actual volume dispensed.
Since the concentration of NaOH is calculated by dividing the moles of NaOH by the volume of NaOH used, an erroneously higher volume will result in a higher calculated concentration. This is because the moles of NaOH used remain the same, but the volume is incorrectly inflated.
To summarize, if the bubble is flushed out of the buret during the titration, the reported concentration of NaOH will be greater than the true concentration since the inflated volume will result in a higher calculated concentration.