Iron<span> is magnetic and the other two not, which means a magnet could be used to attract the </span>iron filings<span> out of the mixture, leaving the salt and </span>sand<span>. Salt is water soluble, while </span>sand<span> is not. This means the two can be mixed in water and stirred. The salt will dissolve and the </span>sand<span> will not.</span>
Answer:
60.094 kJ/mol is the standard molar enthalpy of neutralization for this reaction.
Explanation:
Moles of nitric acid = n
Volume of nitric solution = 60 mL = 0.060 L
Molarity of the hydrogen peroxide = 0.983 M
Moles of sodium hydroxide = n'
Volume of sodium hydroxide solution = 40.0 mL = 0.040 L
Molarity of the sodium hydroxide= 1.842 M
As we can see that moles of sodium hydroxide are in excessive amount and moles of nitric acid are in limiting amount.So, enthalpy of reaction will be calculated with respect to the moles of nitric acid .
Energy released on the reaction for the given amount of acid and base = Q
Q = 3.2439 kJ
0.05898 moles of nitric acid gives 3.2439 kJ of energy.
Energy release when 1 mol of nitric acid reacts:
60.094 kJ/mol is the standard molar enthalpy of neutralization for this reaction.
2. What procedure did you use to complete the lab?
Outline the steps of the procedure in full sentences.
Section II: Observations and Conclusions
3. What charts, tables, or drawings would clearly show what you have learned in this lab?
Each chart, table, or drawing should have the following items:
a. An appropriate title
b. Appropriate labels
4. If you could repeat the lab and make it better, what would you do differently and why?
There are always ways that labs can be improved. Now that you are a veteran of this lab and have experience with the procedure, offer some advice to the next scientist about what you suggest and why. Your answer should be at least two to three sentences in length.
Writing the Lab Report
Now you will use your answers from the four questions above to write your lab report. Follow the directions below.
Section I: Overview of Lab
Use your answers from questions 1 and 2 (above) as the basis for the first section of your lab report. This section provides your reader with background information about why you conducted this lab and how it was completed. It should be one to two paragraphs in length.
Section II: Observations and Conclusions
Use your answers from questions 3 and 4 (above) as the basis for the second section of your lab report. This section provides your reader with charts, tables, or drawings from the lab. You also need to incorporate your answers to the follow-up questions (from the Student Guide) in your conclusions.