A student wants to make a standard solution of sodium hydroxide. She realizes it is not...
A student wants to make a standard solution of sodium hydroxide.
She realizes it is not wise, having calculated the mass of sodium hydroxide, to weigh it out and
dissolve it in the appropriate volume of water. The concentration of the sodium hydroxide solution
will not be the value expected.
§ Give TWO reasons why a standard solution of sodium hydroxide cannot be made in this way.
§ What are the correct method to prepare the standard solution of sodium hydroxide
Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
A student wants to make a standard solution of sodium
hydroxide.
She realizes it is not...
When making a solution of sodium hydroxide and water, a student weighed out an certain amount...
When making a solution of sodium hydroxide and water, a student weighed out an certain amount of sodium hydroxide pellets and dissolved them in an certain amount of water. However, the sodium hydroxide concentration of the resulting solution was lower than the concentration that the student thought they made. What was the problem?
A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs out...
A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs out 201.mg of oxalic acid H2C2O4 , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in 250.mL of distilled water. The student then titrates the oxalic acid solution with her sodium hydroxide solution. When the titration reaches the equivalence point, the student finds she has used 63.0mL of sodium hydroxide solution. Calculate the molarity of the student's sodium hydroxide...
A chemistry student must write down in her lab notebook the concentration of a solution of...
A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: The label on the graduated cylinder says: She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed 13.195 g. She added water to the graduated...
You need to prepare a 2.10 M solution of sodium hydroxide (molar mass of sodium hydroxide=...
You need to prepare a 2.10 M solution of sodium hydroxide (molar mass of sodium hydroxide= 40.00 g/mol), but you only have 10 mL graduated cylinder and a 25 mL beaker. Complete the following sentences regarding the concentration of the prepared solution. 1. In order to prepare 10.0 mL (0.0100 L) solution of 2.10 M sodium hydroxide, a mass of ?? would be required. 2. When the solute and a total of 10.0 mL of water are both added into...
A chemist must prepare 750.0 mL of sodium hydroxide solution with a pH of 13.70 at...
A chemist must prepare 750.0 mL of sodium hydroxide solution with a pH of 13.70 at 25 °C. She will do this in three steps: • Fill a 750.0 mL volumetric flask about halfway with distilled water. • Weigh out a small amount of solid sodium hydroxide and add it to the flask. • Fill the flask to the mark with distilled water. Calculate the mass of sodium hydroxide that the chemist must weigh out in the second step. Round...
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...
a student dissolves 0.461g of potassium hydrogen phthalate (KHP) solution with a solution hydroxide. She records...
a student dissolves 0.461g of potassium hydrogen phthalate (KHP) solution with a solution hydroxide. She records her initial burst reading as 4.72 mL and her final burst reading as 14.26mL. what volume sodium hydroxide did she use? how many moles of KHP were present in the solution? if one mole of khp reacts with one mole of hydroxide, how many moles of hydroxide were added? what was the molarity of the sodium hydroxide solution?
Experiment Quantitative Titration - Part 1: Standardization of Sodium Hydroxide Solution Concentration of HCL standard solution...
Experiment Quantitative Titration - Part 1: Standardization of Sodium Hydroxide Solution Concentration of HCL standard solution / mol L^-1 = 0.09745 Volume of HCL solution / mL = 25 Indicator: Bromothymol Blue Average Volume of NaOH / mL = 24.35 Please find concentration of NaOH / mol^-1 Part 2 - Determination of the concentration of acetic acid Volume of Acedic Acid Solution / mL = 10 Indicator: Phenolphthalein Average Volume of NaOH / mL = 30.94 Please find the concentration...
A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs out 201.mg of oxalic acid H2C2O4 , a diprotic acid that can be purchased inexpensively in high purit...
A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs out 201.mg of oxalic acid H2C2O4 , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in 250.mL of distilled water. The student then titrates the oxalic acid solution with her sodium hydroxide solution. When the titration reaches the equivalence point, the student finds she has used 63.0mL of sodium hydroxide solution. Calculate the molarity of the student's sodium hydroxide...
1) The heat of solution (delta H) For sodium hydroxide is -44.5 kJ/mol calculate the amount...
1) The heat of solution (delta H) For sodium hydroxide is
-44.5 kJ/mol calculate the amount of energy involved when 5.0 g
sodium hydroxide is dissolved in water
2) calculate the change in temperature expected when 5.0 g
sodium hydroxide is dissolved in 50.0 g water using the energy
(Joules) calculated above. (Ccal= 4.5J/g°C, include 4.0g magnetic
stir-bar in the total mass)
Prelab Exercise: The Heat of solution (H) for sodium hydroxide is -44.5 kJ/mol. Calculate the amount of energy...
A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: The label on the graduated cylinder says: She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed 13.195 g. She added water to the graduated...
A chemist must prepare 750.0 mL of sodium hydroxide solution with a pH of 13.70 at 25 °C. She will do this in three steps: • Fill a 750.0 mL volumetric flask about halfway with distilled water. • Weigh out a small amount of solid sodium hydroxide and add it to the flask. • Fill the flask to the mark with distilled water. Calculate the mass of sodium hydroxide that the chemist must weigh out in the second step. Round...
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...
1) The heat of solution (delta H) For sodium hydroxide is
-44.5 kJ/mol calculate the amount of energy involved when 5.0 g
sodium hydroxide is dissolved in water
2) calculate the change in temperature expected when 5.0 g
sodium hydroxide is dissolved in 50.0 g water using the energy
(Joules) calculated above. (Ccal= 4.5J/g°C, include 4.0g magnetic
stir-bar in the total mass)
Prelab Exercise: The Heat of solution (H) for sodium hydroxide is -44.5 kJ/mol. Calculate the amount of energy...
Most questions answered within 3 hours.
-
A study is conducted
to determine the simple linear regression relation (if any) between
average temperature...
asked 12 minutes ago -
Twenty percent of all telephones of a certain type are submitted
for service while under warranty....
asked 43 minutes ago -
Which is a method of transmitting pathogens from one host to
another by carrying microorganisms inside...
asked 22 minutes ago -
In a memo written to a US trade policy maker, outline an
argument for the role...
asked 14 minutes ago -
Ten young adults living in California rated the taste of a newly
developed sushi pizza topped...
asked 33 minutes ago -
In a titration experiment, 29.9 mL of 0.797 M HCOOH neutralizes
20.6 mL of Ba(OH)2. What...
asked 30 minutes ago -
A
roller coaster cart of mass 312 kg travels around a horizontal
curve of radius 41.3...
asked 43 minutes ago -
M1=7/Hr ==> M2=6/Hr ==> M3=9/Hr ==> M4=8/Hr ==>
Demand = 10/Hr
The diagram shows the hourly...
asked 29 minutes ago -
(Cash Flow Statement) Consider the following potential events
that might have taken place at Global Conglomerate...
asked 35 minutes ago -
What kinds of transitions form the basis for AA and AE?
Can the detector differentiate wavelengths...
asked 42 minutes ago -
If I have a function in python, say show(B), how would I code it
so that...
asked 44 minutes ago -
Size properly the power supply that you need to purchase if you
have the following equipment....
asked 45 minutes ago