Homework Answers
Question 1
Answer
Solubility of borax in water increases with raise in temperature.
Borax is chemically know as sodium borate, sodium tetraborate or disodium tetraborate.it is an important boron compound.
Chemical formula of borax is Na2B4O7.10H2O
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please answer 1-6 and 8
DISCUSSION 1. Does the solubility of borax increase or decrease when...
Thermodynamic functions for Borax (Ch 18 Individual tBAT Borax Borax (sodium tetraboratedecahydra...
Thermodynamic functions for Borax (Ch 18 Individual tBAT Borax Borax (sodium tetraboratedecahydrate), a mineral found in dry lakebeds in California, is used as a preservative and in the manufacturing of soap and glass. By determining the Ksp of borax at different temperatures, we can determine AH, AS, and AG for the dissolution of borax: HO Na (Borax) Tetraborate) The relationship: In K,-(-ΔΗ/R) (1/T) + (AS/R) has the form of a linear equation, where R is the constant, 8.314 J/K-mol. The...
Borax, sodium tetraboratedecahydrate, is an important mineral found in dry lakebeds in California. It is used to make so...
Borax, sodium tetraboratedecahydrate, is an important mineral found in dry lakebeds in California. It is used to make soap and glass and used as a preservative. You can use the values of Ksp (solubility-product constant) of borax at different temperatures to determine ΔH∘, ΔS∘, and ΔG∘ for the dissolution of borax: Na2B4O5(OH)4⋅8H2O(s)(borax)→2Na+(aq)+B4O5(OH)42−(aq)(tetraborate)+8H2O(l) The relationship ln(Ksp)=−ΔH∘RT+ΔS∘R has the form of a linear equation, y=mx+b, where y is lnKsp and x is 1/T. The slope (m) is equal to −ΔH∘/R, and the...
Enthalpy and Entropy Changes of Dissolving Borax Plot your values of ln(Ksp) vs. 1/T and find...
Enthalpy and Entropy Changes of Dissolving Borax
Plot your values of ln(Ksp) vs. 1/T
and find the slope and y-intercept of the best fit line.
Use the equation for the best fit line and the following
equation
ln(K)=−ΔH∘RT+ΔS∘Rln(K)=−ΔH∘RT+ΔS∘R to calculate ΔH° and
ΔS° for dissolving Borax
Please help me solve the incorrect ones, thank you!
Table 2. Calculations ~60°C trial ~50°C trial ~40°C trial ~30°C trial ~20°C trial Vol. of HCl used (mL) 15.00 13.00 6.000 10.00 2.00 Moles of...
Can someone help me finish my table? all the inforamtion is there. molarity of HCL =0.5M g...
can someone help me finish my
table? all the inforamtion is there.
molarity of HCL =0.5M
grams of borax = 18.41g
the Relationship between Thermodynamics and Equilibrium 21 Complete the data table for each temperature studied. Beaker Label 42 °C 45 °C 36 ° C 39 °C 33 °C 2EC 138℃-2°C| ーでー 46℃ Temperature reading (C) Absolute temperature (K) 1/T Final buret reading Initial buret reading Volume of HCI Moles of H+ Moles of B Os(OH)2 Molarity of B,Os(OH)2 306.230.2...
= 1-Lab from Chapter 15 Eq and Le Chat - Word Search Design Layout References Mailings...
= 1-Lab from Chapter 15 Eq and Le Chat - Word Search Design Layout References Mailings Review View Help Add i nk Ink to Ink to Drawing Ink Pen Editor Shape Math C anvas Replay Convert Replay Open the Le Chatlier's Principle Activity found in your textbook, Interactive General Chemistry. (Section 15.6, Figure 15.9), run the simulation and complete the following questions. Pens insert 1. Start with the default settings where K - 1.00. a. Write the expression based on...
help please? this was the only other information given REPORT SHEET Determination of the Solubility-Product Constant...
help please?
this was the only other information given
REPORT SHEET Determination of the Solubility-Product Constant for a Sparingly Soluble Salt EXPERIMENT 8 A. Preparation of a Calibration Curve Initial (Cro121 0.0024 M Absorbance 5 mL Volume of 0.0024 M K Cro Total volume 1. I mL 100 mL 2. 100ML 3. 10 mL 100ml 4. 15 mL 100 ML Molar extinction coefficient for [CrO2) [Cro,2) 2.4x100M 12x1044 2.4810M 3.6810M 0.04) 2037.37 0.85 1.13 2. 3. Average molar extinction coefficient...
please help answer question 4, a-f please using the data below from chart 1 objectives from...
please help answer question 4, a-f please
using the data below from chart 1
objectives from lab, thank you
DATA:CA y 3 Ay No3 Part I: Cell Potential of voltaic cells under standard conditions: cell CU CND2 #27 14.0m Give the half Half cell reaction at Combinations Oxidation Reduction E the anode and with [ion] takes place Theoretical takes place cathode. Write in M here here (V) above the arrow E c (V) if it is oxidation or reduction. |-0.340...
please answer all prelab questions, 1-4. This is the prelab manual, just in case you need...
please answer all prelab questions, 1-4.
This is the prelab manual, just in case you need background
information to answer the questions. The prelab questions are in
the 3rd photo.
this where we put in the answers, just to give you an
idea.
Lab Manual Lab 9: Simple Harmonic Oscillation Before the lab, read the theory in Sections 1-3 and answer questions on Pre-lab Submit your Pre-lab at the beginning of the lab. During the lab, read Section 4 and...
just one example/demonstration! Data needed to be calculated is in highlighted in green boxes. And I...
just one example/demonstration!
Data needed to be calculated is in highlighted in green boxes.
And I highlighted in red an equation (not sure if thats what you
use to calculate it) And ignore the lab instructions on completeing
a graph!! I already know how to do that in excel, just curious how
Ln (relative rate) and 1/T in K^-1 is calculated by hand*
here is the rest of that lab leading up to the question as I
know its typically...
Thermodynamic functions for Borax (Ch 18 Individual tBAT Borax Borax (sodium tetraboratedecahydrate), a mineral found in dry lakebeds in California, is used as a preservative and in the manufacturing of soap and glass. By determining the Ksp of borax at different temperatures, we can determine AH, AS, and AG for the dissolution of borax: HO Na (Borax) Tetraborate) The relationship: In K,-(-ΔΗ/R) (1/T) + (AS/R) has the form of a linear equation, where R is the constant, 8.314 J/K-mol. The...
Enthalpy and Entropy Changes of Dissolving Borax
Plot your values of ln(Ksp) vs. 1/T
and find the slope and y-intercept of the best fit line.
Use the equation for the best fit line and the following
equation
ln(K)=−ΔH∘RT+ΔS∘Rln(K)=−ΔH∘RT+ΔS∘R to calculate ΔH° and
ΔS° for dissolving Borax
Please help me solve the incorrect ones, thank you!
Table 2. Calculations ~60°C trial ~50°C trial ~40°C trial ~30°C trial ~20°C trial Vol. of HCl used (mL) 15.00 13.00 6.000 10.00 2.00 Moles of...
can someone help me finish my
table? all the inforamtion is there.
molarity of HCL =0.5M
grams of borax = 18.41g
the Relationship between Thermodynamics and Equilibrium 21 Complete the data table for each temperature studied. Beaker Label 42 °C 45 °C 36 ° C 39 °C 33 °C 2EC 138℃-2°C| ーでー 46℃ Temperature reading (C) Absolute temperature (K) 1/T Final buret reading Initial buret reading Volume of HCI Moles of H+ Moles of B Os(OH)2 Molarity of B,Os(OH)2 306.230.2...
= 1-Lab from Chapter 15 Eq and Le Chat - Word Search Design Layout References Mailings Review View Help Add i nk Ink to Ink to Drawing Ink Pen Editor Shape Math C anvas Replay Convert Replay Open the Le Chatlier's Principle Activity found in your textbook, Interactive General Chemistry. (Section 15.6, Figure 15.9), run the simulation and complete the following questions. Pens insert 1. Start with the default settings where K - 1.00. a. Write the expression based on...
help please?
this was the only other information given
REPORT SHEET Determination of the Solubility-Product Constant for a Sparingly Soluble Salt EXPERIMENT 8 A. Preparation of a Calibration Curve Initial (Cro121 0.0024 M Absorbance 5 mL Volume of 0.0024 M K Cro Total volume 1. I mL 100 mL 2. 100ML 3. 10 mL 100ml 4. 15 mL 100 ML Molar extinction coefficient for [CrO2) [Cro,2) 2.4x100M 12x1044 2.4810M 3.6810M 0.04) 2037.37 0.85 1.13 2. 3. Average molar extinction coefficient...
please help answer question 4, a-f please
using the data below from chart 1
objectives from lab, thank you
DATA:CA y 3 Ay No3 Part I: Cell Potential of voltaic cells under standard conditions: cell CU CND2 #27 14.0m Give the half Half cell reaction at Combinations Oxidation Reduction E the anode and with [ion] takes place Theoretical takes place cathode. Write in M here here (V) above the arrow E c (V) if it is oxidation or reduction. |-0.340...
please answer all prelab questions, 1-4.
This is the prelab manual, just in case you need background
information to answer the questions. The prelab questions are in
the 3rd photo.
this where we put in the answers, just to give you an
idea.
Lab Manual Lab 9: Simple Harmonic Oscillation Before the lab, read the theory in Sections 1-3 and answer questions on Pre-lab Submit your Pre-lab at the beginning of the lab. During the lab, read Section 4 and...
just one example/demonstration!
Data needed to be calculated is in highlighted in green boxes.
And I highlighted in red an equation (not sure if thats what you
use to calculate it) And ignore the lab instructions on completeing
a graph!! I already know how to do that in excel, just curious how
Ln (relative rate) and 1/T in K^-1 is calculated by hand*
here is the rest of that lab leading up to the question as I
know its typically...
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