1) Assume an air bubble had been in the buret tip when you took your first readi
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1) Assume an air bubble had been in the buret tip when you took your first reading and it was replaced by NaOH during the course of the titration. Would your experimental value for the concentration of NaOH be higher, lower, or unchanged as compared to the true value? Explain
5·Titrations Q Search Sheet Insert Page Layout FormulasData Review View X Cut Calibri (Body) Copy AutoSum Fill Clear Calibri (Body) 11 AA Wrap Text General Paste $ % , .00.00 Conditional Format Cell Insert Delete Format Sort & Filter + + | Merge & Center Format Formatting as Table Styles A7 × / Instructions: Please do NOT put units on your values as the units are already indicated. Please make sure each number is displayed with correct significant figures i.e. 1.340 not 1.34. You may need to adjust the Instructions Please do NOT put units on your values as the units are already indicated. Please make sure each number is displayed with correct significant figures i.e. 1.340 not 1.34. You may need to adjust the number of 7 digits displayed in the cell using the increase or decrease decimal buttons. Trial 2 0.224 0.72 12.13 11.41 Trial 3 0.227 0.32 Trial 4 0.224 0.12 15.32 15.2 Trial 1 0.225 10 1.Mass of KHP used (gl 11 2.Initial Buret Reading (mL) 12 3. Final Buret Reading [mL] 13 4] Volume of NaOH solution added (mL) 14 5] Moles KHP used (mol) 15 [6] Moles of NaOH reacted with KH 16 7] Concentration of NaOH sol. (mol/L) 17 8] Average NaOH concentration (mol/L) 18 9] Standard Deviation 19 10] Percent Relative Standard Deviation 0.12 10.85 15.21 10.73 14.89 0.0011 0.0011 0.0011 0.00101 0.0011 0.0011 0.0011 0.00101 0.093 0.096 0.073 0.0659 0.327 0.283 86.54% 23 24 25 26 27 28 29 31 32 Post Lab Questions 34 1) Assume an air bubble had been in the buret tip when you took your first reading and it was replaced by NaOH 35 during the course of the titration. Would your experimental value for the concentration of NaOH be higher 36 lower, or unchanged as compared to the true value? Explain 37 38 since you measure volume of NaOH than the actual value, the concentration of NaOH will be lower 39 Sheet1 Sheet2 Sheet3 Ready 100%Explanation / Answer
only 1 question at a time
1)
Let actually V mL of NaOh was required for titration
But since Burret has some bubble, V mL of NaOh will be present in larger volume
SO when you do the titration, you will think that greater NaOH has been used
So, it will be higher
Question 2 Excel sheet, please magnify and put
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