Homework Answers
Add Answer to:
1. Is the calculated sodium hydroxide concentration higher, lower or the same as the actual sodium...
5. Will the calculated molarity of NaOH be lower or higher if you use tap water...
5. Will the calculated molarity of NaOH be lower or higher if you use tap water rather than deionized water to dissolve the KHP crystals or to rinse down the walls of the flask during the titration? Tap water contains some calcium bicarbonate. The calculated molti O NAOH will be lower lose top water rother thon deionited water to dissolve the crystals 6. Write and balance the equation for a neutralization of a sulfuric acid solution of unknown concentration by...
In this procedure it is important to store the sodium hydroxide, NaOH, solution securely capped to...
In this procedure it is important to store the sodium hydroxide, NaOH, solution securely capped to avoid evaporation of water. 1. What would the impact of leaving the plastic bottle of sodium hydroxide open to the atmosphere and allowing some of the water to evaporate be on the concentration of the solution. Would the concentration be higher, lower, or unchanged. Provide an explanation for your answer. 2. If the sodium hydroxide, NaOH, solution was not re-standardized after some of the...
informations to solve the problem supooosed 3.109 g of sodium hydroxide was weighed out,dissolved, quantitively transferred...
informations to solve the problem supooosed 3.109 g of sodium hydroxide was weighed out,dissolved, quantitively transferred to a 250 ml volumetric flask, made up to the mark,and mixed well, what is the molarity of sodium hydroxide? the answer is 0.3109 M 1.a. Burets are used to transfer titrant in a titration. A burette is depicted in the lab manual. A 10.00 mL sample of vinegar was titrated with the sodium hydroxide sample from question 1. The initial volume of sodium...
A “Bayer” brand of aspirin was dissolved in some sodium hydroxide and transferred to a 100.0...
A “Bayer” brand of aspirin was dissolved in some sodium hydroxide and transferred to a 100.0 ml volumetric flask and diluted to the mark with distilled water. A 2.6ml aliquot of this solution was transferred to a second 100.0 ml volumetric flask and diluted to the mark with iron (III) chloride solution. The concentration of the iron (III) salicylate complex was found to be 0.055mM. What was the original concentration of A.S.A (aspirin) in the original solution, in mM? Round...
64 Experiment 9 Titration of an Acid with a Base QUESTIONS PRE LAB 1. How would the calculated concentration of the...
64 Experiment 9 Titration of an Acid with a Base QUESTIONS PRE LAB 1. How would the calculated concentration of the HCl be affected, if the sodium hydroxide were poured from a beaker that contained some water before the NaOH were added to it? 2. What color is phenolphthalein in acid? What color is it in base? 3. The acid and base in this experiment are completely harmless-True or False? Explain your answer.
concentration if the following errors occurred: Explain the effect on your calculated acid concentration nel in...
concentration if the following errors occurred: Explain the effect on your calculated acid concentration nel in the buret during the titration. 1. A student left his or her buret funnel in the buret durin 2. A student started their titration with air bubbles in the buret tip. 3. The dilute HCl was over-diluted in the volumetric flask. 4. The flask that the student added the dilute acid to before the titration was wet.
What is the hydroxide-ion concentration of a 0.250 M sodium oxalate (Na2C2O4) solution?
What is the hydroxide-ion concentration of a 0.250 M sodium oxalate (Na2C2O4) solution?For oxalic acid (H2C2O4), Ka1 = 5.6×10–2 and Ka2 = 5.1×10–5.
POST-LAB QUESTIONS Explain the effect on your calculated acid concentration if the following errors occurred 1....
POST-LAB QUESTIONS Explain the effect on your calculated acid concentration if the following errors occurred 1. A student left his or her buret funnel in the buret during the titration. 2. A student started their titration with air bubbles in the buret tip. 3. The dilute HCl was over-diluted in the volumetric flask. 4. The flask that the student added the dilute acid to before the titration was wet. Titration of an unknown Acid
Concentration of NaOH = 1600 x10- Molar Sodium hydroxide Nach Trial 1 Trial 2 Trial Trial...
Concentration of NaOH = 1600 x10- Molar Sodium hydroxide Nach Trial 1 Trial 2 Trial Trial 4 2.60/1.20 1.40/1.30 28.20 29.10.26.1026.50 Volume of NaOH added Initial buret reading Final buret reading Moles of NaOH added Moles of HCl reacted Molarity of diluted HCI Molarity of undiluted HCI Average molarity of undiluted HCI Precision PROCEDURE 1. Obtain approximately 40 mL of an unknown acid in an Erlenmeyer flask from your teaching assistant. 2. Clean your 250-ml volumetric flask (contains exactly 250.00...
Use a volumetric pipet to deliver 2 mL of 4 M sodium hydroxide solution to each...
Use a volumetric pipet to deliver 2 mL of 4 M sodium hydroxide solution to each of seven 100-mL volumetric flasks. Add 2,4, 6, 8, and 10 mL, respectively, of the salicylic acid stock solution to 5 of the labeled flasks. Calculate the concentrations of the standard solutions. Use a pipet to place 10 mL of the unknown solution into another volumetric flask and label Unknown 1. Dilute each solution to the mark with DI water. The seventh flask that...
5. Will the calculated molarity of NaOH be lower or higher if you use tap water rather than deionized water to dissolve the KHP crystals or to rinse down the walls of the flask during the titration? Tap water contains some calcium bicarbonate. The calculated molti O NAOH will be lower lose top water rother thon deionited water to dissolve the crystals 6. Write and balance the equation for a neutralization of a sulfuric acid solution of unknown concentration by...
In this procedure it is important to store the sodium hydroxide, NaOH, solution securely capped to avoid evaporation of water. 1. What would the impact of leaving the plastic bottle of sodium hydroxide open to the atmosphere and allowing some of the water to evaporate be on the concentration of the solution. Would the concentration be higher, lower, or unchanged. Provide an explanation for your answer. 2. If the sodium hydroxide, NaOH, solution was not re-standardized after some of the...
64 Experiment 9 Titration of an Acid with a Base QUESTIONS PRE LAB 1. How would the calculated concentration of the HCl be affected, if the sodium hydroxide were poured from a beaker that contained some water before the NaOH were added to it? 2. What color is phenolphthalein in acid? What color is it in base? 3. The acid and base in this experiment are completely harmless-True or False? Explain your answer.
concentration if the following errors occurred: Explain the effect on your calculated acid concentration nel in the buret during the titration. 1. A student left his or her buret funnel in the buret durin 2. A student started their titration with air bubbles in the buret tip. 3. The dilute HCl was over-diluted in the volumetric flask. 4. The flask that the student added the dilute acid to before the titration was wet.
POST-LAB QUESTIONS Explain the effect on your calculated acid concentration if the following errors occurred 1. A student left his or her buret funnel in the buret during the titration. 2. A student started their titration with air bubbles in the buret tip. 3. The dilute HCl was over-diluted in the volumetric flask. 4. The flask that the student added the dilute acid to before the titration was wet. Titration of an unknown Acid
Concentration of NaOH = 1600 x10- Molar Sodium hydroxide Nach Trial 1 Trial 2 Trial Trial 4 2.60/1.20 1.40/1.30 28.20 29.10.26.1026.50 Volume of NaOH added Initial buret reading Final buret reading Moles of NaOH added Moles of HCl reacted Molarity of diluted HCI Molarity of undiluted HCI Average molarity of undiluted HCI Precision PROCEDURE 1. Obtain approximately 40 mL of an unknown acid in an Erlenmeyer flask from your teaching assistant. 2. Clean your 250-ml volumetric flask (contains exactly 250.00...
Use a volumetric pipet to deliver 2 mL of 4 M sodium hydroxide solution to each of seven 100-mL volumetric flasks. Add 2,4, 6, 8, and 10 mL, respectively, of the salicylic acid stock solution to 5 of the labeled flasks. Calculate the concentrations of the standard solutions. Use a pipet to place 10 mL of the unknown solution into another volumetric flask and label Unknown 1. Dilute each solution to the mark with DI water. The seventh flask that...
Most questions answered within 3 hours.
-
The area of an elastic circular loop decreases at a constant
rate, dA/dt = −6.60×10−3 m2/s...
asked 5 minutes ago -
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 1 hour ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 1 hour ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 1 hour ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 1 hour ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 1 hour ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 2 hours ago -
Given the information in the table, which of the following
statements is CORRECT?
Stock A
Stock...
asked 2 hours ago -
Write MARIE assembly language programs that do the following:
Write a program that inputs an integer...
asked 2 hours ago -
Explain an understanding of services and protocols.
Explain the job of DNS.
Explain the three email...
asked 2 hours ago -
(As soon as possible) Balance each of the following equations
according to the half-reaction method:
H2O2(aq)...
asked 2 hours ago -
A thin rod with a mass of 3.5kg and a length L=1.5 m is oriented
horizontally....
asked 2 hours ago