Submit a clean, dry, and properly labeled 50-mL reagent bottle for your unknown solution. Pipet 20.00 mL of the sample in 250-mL Erlenmeyer flask. Add 5 mL of buffer and 5 drops of indicator. Titrate the solution until it turns light blue. If the titration consumes more than 50 mL of the titrant, dilute the sample accordingly. Compute for ppm of CaCO3 using the following table. Mean Molarity = 2.487 x 10^-3 M Blank correction = 0.015

Submit a clean, dry, and properly labeled 50-mL reagent bottle for your unknown solution. Pipet 20.00 mL of the sample in 250-mL Erlenmeyer flask. Add 5 mL of buffer and 5 drops of indicator. Titrate the solution until it turns light blue. If the titration consumes more than 50 mL of the titrant, dilute the sample accordingly. Compute for ppm of CaCO3 using the following table. Mean Molarity = 2.487 x 10^-3 M Blank correction = 0.015

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter13: Gases

Section: Chapter Questions

Problem 117A

See similar textbooks

Similar questions

Calculate the density in molecules/cm3 for a gas at 10 torr and at 1 x 10-7 torr. 10-7 torr is the typical pressure in a mass spectrometer. show work please :)
In Part B, you used a similar procedure to that of Part A to determine the mass percent of CaCO3 in an antacid tablet. The commercially accepted range of CaCO3 in an antacid tablet is 25–35% by mass. Miranda obtained the data below from her Part B trial: TRIAL PRESSURE (torr) MASS OF TABLET (g) TEMPERATURE (°C) VOLUME CO2 RECOVERED (mL) 1 750.5 0.5702 21.3 69.6 2 750.5 0.5622 21.2 68.2 Miranda determined her average % Recovery of CO2 to be 65.0% from Part A. Based on her data collected from Part A, was the average percent mass of CaCO3 in her antacid tablet within the commercially accepted range? Yes, her mass percent does fall within the commercially accepted range. No, her mass percent does not fall within the commercially accepted range.
Please type your answers out or make it clearly legible.
Please write a paragraph explaining the analysis Please try to answer as fast as possible please
I am still working through understanding this, the full steps to compare to what I already have written down I need to see how much I really did correctly! Please help!
Give an example of an organic chemistry laboratory process that involves medium to high severity and likelihood, and list precautions that can be taken to lower the risk.
Please write a clear observation please (NEAT HAND WRITING PLEASE)!!
1) Determine the questionable data (0.821), if it should be rejected or not at 95% confidence level (use either Q-Test or Grubb’s Test). 2) Based on your decision, find the concentration of the organic pollutant.
A student obtained 2.111 g of a mixture containing four components. After performing separation by chemical and physical methods, the student obtained the following mass data: Component 1: 0.486 g Component 2: 0.317 g Component 3: 0.127 g Component 4: 0.929 g Calculate the total percent recovery of the mixture. (Please show work)
Please answer fast it’s very important and urgent I say very urgent so please answer super super fast please For the image attached For 1. a Mass of metal: Trial 1 is 35.0228 g Trial 2 is 35.0915 g Trial 3 is 34.0821 g Mass of water: Trial 1 is 20.0177 g Trial 2 is 20.0250 g Trial 3 is 20.0168 g For delta t of water: Trial 1 is 15.5 C Trial 2 is 15.7 C Trial 3 is 15.1 C For delta t of metal Trial 1 is 80.1 C Trial 2 is 80.2 C Trial 3 is 79.5 C For B my calculated Specific heat is: Trial 1 is 0.462 Trial 2 is 0.467 Trial 3 is 0.466
Calculate the pressure at the base of a mercury column 400 mm high. The mercury density at room temperature is 13.5951 g / cm3.Express the result in column, atmosphere, psi, pascal, and bar units. Calculate the pressure exerted on the drum skin of a diver located at a depth of 20 feet below sea level. Assume that the seawater density is: 1 gr / cm3. Calculate the molar volume of Cu2Te. Express this volume in mol/liter and mol/cm 3 units. ( rm=7.270 g/cm3) Use the ideal gas law and the van der Waals equation to calculate the pressure of ammonia gas at a temperature. T = 300 K the molar volume is V = 24 liters / mol
Calcium Chloride Ammonium Chloride Trial 1 Trial 2 Trial 3 Trial 1 Trial 2 Trial 3 Mass of water 100g 100g 100g 100g 100g 100g Mass of salt 5.36g 10.28g 15.10g 5.29 10.43 15.31 Moles of salt Initial T 21.0 21.0 21.0 20.0 20.0 20.0 Final T 29.6 36.2 43.5 17.1 13.2 10.1 ΔT 8.6 15.2 22.5 -2.9 -6.8 -9.9 ΔH(Joules) ΔH(kj/mol)