Question 20 A solution of potassium permanganate of unknown concentration was analyzed against a standard of various concentrations. Table 1. Data for Standard Calibration Curve Absorbance at 525 nm Potassium permanganate Standard (mol/Liter) 0.00040 0.104 0.00080 0.258 0.00120 0.453 0.00160 0.682 0.00200 0.894 What is the concentration of potassium permanganate if its absorbance is 0.465? 0.00153M KMnO4 O 0.00155 M KMnO4 none of the above O 0.00117 M KMnO4 O 0.00137 M KMnO4

Question 20 A solution of potassium permanganate of unknown concentration was analyzed against a standard of various concentrations. Table 1. Data for Standard Calibration Curve Absorbance at 525 nm Potassium permanganate Standard (mol/Liter) 0.00040 0.104 0.00080 0.258 0.00120 0.453 0.00160 0.682 0.00200 0.894 What is the concentration of potassium permanganate if its absorbance is 0.465? 0.00153M KMnO4 O 0.00155 M KMnO4 none of the above O 0.00117 M KMnO4 O 0.00137 M KMnO4

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter16: Applications Of Neutralization Titrations

Section: Chapter Questions

Problem 16.10QAP

See similar textbooks

Similar questions

why is it better to generate a calibration plot than to perform a determination using a single measurements for a standard solution?
1. Compare ... M 2. Standard ... 3. AS surroundi... 4. AG° = AH°... 5. AG: Pre... 1req 6. AG: Enthal... M 7. AG fro... 1req 8. Calculat... 1req 9. Calculat... 1req 10. Calcul... 1req Question Question Use the References to access important values if needed for this question. Consider the reaction 4HCl(g) + O2(g) 2H2O(g) + 2Cl2(g) Using the standard thermodynamic data in the tables linked above, calculate AG for this reaction at 298.15K if the pressure of each gas is 11.74 mm Hg. ANSWER: kJ/mol Submit Answer Retry Entire Group 2 more group attempts remaining
I want a abstract of the hardness experiment and an explanation of the theory and objectives Thank you
In the standardization of HCl against pure anhydrous Na2CO3, 1mL was found to be equivalent to 0.05g of the primary standard. Compute for the normality.
tion 2 3 5 8 9 10 11 12 13 14 15 16 17 18 19 20 The end point and the equivalence point are always equal. O True O False 事 4.
A solution of potassium permanganate of unknown concentration was analyzed against a standard of various concentrations. Table 1. Data for Standard Calibration Curve Absorbance at 525 nm Potassium permanganate Standard (mol/Liter) 0.00040 0.104 0.00080 0.258 0.00120 0.453 0.00160 0.682 0.00200 0.894 What is the concentration of potassium permanganate if its absorbance is 0.465? none of the above 0.00137 M KMnO4 O 0.00155 M KMnO4 0.00117 M KMnO4 0.00153M KMnO4
Short Answer 22. Explain why AH, system=-4surroundings
I need plots on a graph that has plots of pressure against the inverse of volume. My volumes 1) Raciprocal of 10.0 nm = 1/10.0 =0.100 nm-1 2) Raciprocal of 6.0 nm = 1/6.0 =0.1667 nm-1 3) Raciprocal of 14.4 nm = 1/14.4 =0.069 nm-1 4) Raciprocal of 11.3 = 1/11.3 =0.0885 nm-1 5) Reciprocal of 15.0 nm = 1/15.0 =0.0667 nm-1 The pressures: 5.4 atm 9.6 atm 3.8 atm 5.4 atm 3.5 atm
please help find standard devi. and average
auDUIUance UI U.I JU ai 4JJ IIII III 1. UU CIII cuvclic. Calculate the molar absorptivity of the pigment at 453 nm? Q5) A student is tasked to determine the number of moles of H2SO4 (aq) in a 200 ml of an unknown solution. The student prepares a series of solutions with known concentrations of H2SO4 (ag) and measures the absorbance of each at an appropriate wavelength. These data are used to construct the calibration plot shown below. 1.00 0.80- 0.60 - 0.40- 0.20- 0.00- 3 x 10-4 6 x 10-4 Concentration (mol/L) If the absorbance of the unknown solution is 0.70, how many moles of H2SO4 (aq) does the 200 ml sample contain? Absorbance
Tap water is measured for arsenic and found to have a mean signal of 0.0061. Next, a small amount of Arsenic is spiked into the tap water such that the new value is 0.700 ppb higher than before. The mean signal from this new low-level concentration is 0.0447, with a standard deviation of 0.00560. What is the Lower Limit of Quantitation? (Hint: estimate slope as fraction numerator triangle Y over denominator triangle X end fraction , where triangle Y is the difference between the low level spike and the blank signals; and triangle X is the concentration change between the spiked and unspiked sample)
Joint Package Course/28-11-2021 Paragraph for Questions 9 and TO স্ 9 एवं 10 के लिये अनुष्छेद At 298 K following observation was made for KCI solution Concentration (Mol/L) Am (S cm² mol) 0.01 0.04 123 112 298 K पर, KCI विलयन के लिए निम्न प्रेक्षण लिए गये सान्द्रता (MolL) Am (S cm² mol") 0.01 0.04 123 What is limiting molar conductance of KCI at 298 K (in S cm' mol) 112 298 K पर, KCI का सीमान्त मोलर चालकत्व (S cm' mol में) क्या है? (A) 134 (B) 145 (C) 150 (D) 166 10. Specific conductance of 0.25 M KCI solution at 298 K is (in S m) 298 K पर, 0.25 M KCI विलयन का विशिष्ट चालकत्व (S m में) हैं - (C) 0.01975 (D) 1.975 (A) 0.017 (B) 1.7 9.