hello there, i have lab i want you to paraphrase the whole lab. and keep the table and equation the same. i want %100 paraphrase.
thanks.
TheEnthalpy of Neutralization of Phosphoric Acid Worksheet
Describe coffee cup calorimetry and how it is used to find the enthalpy of various reactions that occur in aqueous solutions. Make sure to include the relevant equations. Why can you use the specific heat capacity and density of pure water to determine the enthalpy of reaction? What assumptions must be made in order to do this?
The reaction solution was prepared by mixing 50.0 ML of 0.60 M H3PO4 and 50.0 mL of 1.85 M NaOH. The reaction was carried out in a coffee cup and calculated the empathy of the reaction. It was assumed that, Styrofoam cup as an isolated system and energy lost to the surrounding was zero or negligible.
The energy change (q soln) in the system can be calculated by the following equation
qsol= Cs×m ×∆T
The qsol stands for the energy change, Cs is specific heat capacity of water and m represent the mass of the solution.
The energy change corresponding to the reaction can be defined by the following equation,
In the above equation –qrxn stands for the amount of the energy change of reaction.
Enthalpy of the reaction can be calculated by the following equation
∆H = qrxn/moles H3PO4
Enthalpy change per mole of the reaction solution can be calculated by the above equation.
Data: Insert your data table (with a caption) below that captures all of the relevant information.
Trial 1
Trial 2
Maximum Temperature oC
22.1
22.3
Initial Temperature oC
32.1
32.0
Temperature Change ∆T
10
9.7
Table: This table shows the change of temperature in the reaction.
Graph1: This graph for trial one that shows the change of Temp over Time of reaction
Results:
∆H=-139 KJ/Mol
Report your calculated average value of ∆H of neutralization for phosphoric acid. Include hand written sample calculations.
Percent Error= 12.3%
Report the percent error for the ∆H of neutralization for phosphoric acid. Include any calculations.
Discussion: Is your value for the ∆H of neutralization for phosphoric acid greater than or less than the accepted value. Think of some valid sources of error to account for your difference and explain how they would contribute to the direction of your error.
The value is less than the expected for the ∆H of neutralization for phosphoric acid. There were few random errors during the experiment. The main random error was not sealing the top of the coffee cup off. The system was left open. The cup was not closed and heat was lost to the surrounding. The system did not reach it is maximum temperature because heating was being lost constantly to the surrounding. The maximum temperature should been higher when the reaction was carried out. One way to avoid a random error like this one is by sealing off the top of the coffee cup. When you seal off the top of the coffee cop the heat will stay in the system and will not be lost to the surrounding.
We provide professional writing services to help you score straight A’s by submitting custom written assignments that mirror your guidelines.
Get result-oriented writing and never worry about grades anymore. We follow the highest quality standards to make sure that you get perfect assignments.
Our writers have experience in dealing with papers of every educational level. You can surely rely on the expertise of our qualified professionals.
Your deadline is our threshold for success and we take it very seriously. We make sure you receive your papers before your predefined time.
Someone from our customer support team is always here to respond to your questions. So, hit us up if you have got any ambiguity or concern.
Sit back and relax while we help you out with writing your papers. We have an ultimate policy for keeping your personal and order-related details a secret.
We assure you that your document will be thoroughly checked for plagiarism and grammatical errors as we use highly authentic and licit sources.
Still reluctant about placing an order? Our 100% Moneyback Guarantee backs you up on rare occasions where you aren’t satisfied with the writing.
You don’t have to wait for an update for hours; you can track the progress of your order any time you want. We share the status after each step.
Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types.
Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types.
From brainstorming your paper's outline to perfecting its grammar, we perform every step carefully to make your paper worthy of A grade.
Hire your preferred writer anytime. Simply specify if you want your preferred expert to write your paper and we’ll make that happen.
Get an elaborate and authentic grammar check report with your work to have the grammar goodness sealed in your document.
You can purchase this feature if you want our writers to sum up your paper in the form of a concise and well-articulated summary.
You don’t have to worry about plagiarism anymore. Get a plagiarism report to certify the uniqueness of your work.
Join us for the best experience while seeking writing assistance in your college life. A good grade is all you need to boost up your academic excellence and we are all about it.
We create perfect papers according to the guidelines.
We seamlessly edit out errors from your papers.
We thoroughly read your final draft to identify errors.
Work with ultimate peace of mind because we ensure that your academic work is our responsibility and your grades are a top concern for us!
Dedication. Quality. Commitment. Punctuality
Here is what we have achieved so far. These numbers are evidence that we go the extra mile to make your college journey successful.
We have the most intuitive and minimalistic process so that you can easily place an order. Just follow a few steps to unlock success.
We understand your guidelines first before delivering any writing service. You can discuss your writing needs and we will have them evaluated by our dedicated team.
We write your papers in a standardized way. We complete your work in such a way that it turns out to be a perfect description of your guidelines.
We promise you excellent grades and academic excellence that you always longed for. Our writers stay in touch with you via email.