User Account

All Pages

Imagine you are performing a calorimetry experiment

Assignment Help Chemistry
Reference no: EM131353831

Imagine you are performing a calorimetry experiment using a constant-pressure calorimeter. First, you calibrate the calorimeter using the reaction of KOH with HCl (enthalpy = -56.2 kJ/mol). Then, you use the calorimeter to investigate the dissolution of solid ammonium nitrate (NH4NO3). The questions below involve your data (assume the density and specific heat capacity of your solutions is the same as liquid water).

a) A quantity of 85.0mL of 0.600M KOH is mixed with 85.0mL of 0.600M HCl in a coffee-cup calorimeter. The initial temperature of both solutions is 17.36 (degrees celsius), and the final temperature of the mixed solutions is 19.02 (degrees celsius). What is the heat capacity of the calorimeter?

b) A 3.52g sample of NH4NO3 is then dissolved in 80.0mL of water in the same calorimeter, and temperature of the solution changes from 17.54(degrees celcius) to 16.64 (degrees celcius). What is the enthalpy of solution of ammonium nitrate, in kJ/mol?

c) How does the value calculated in part (b) relate to the use of ammonium nitrate in instant cold packs (e.g.,in first aid kits). EXPLAIN BRIEFLY.

Reference no: EM131353831

Questions Cloud

Difference between the budget deficit and the national debt : Explain the difference between the budget deficit and the national debt. If the deficit gets turned into a surplus, what happens to the debt?
What is the boiling point of a solution : 1. What is the boiling point of a solution produced by adding 370 g of cane sugar (molar mass 342.3 g/mol) to 2.4 kg of water? For each mole of nonvolatile solute, the boiling point of 1 kg of water is raised 0.51 °C.
How much helium is lost per hour : Completely surrounding the helium can are walls maintained at the temperature of liquid nitrogen (77.35 K), and the intervening space is continuously evacuated to a very low pressure. How much helium is lost per hour?
Opinion of your decision to make that action : What is your opinion of your decision to make that action - What were the consequences that you experienced because of each action, in yourself and/or in others? (Were there any unintended consequences?)
Imagine you are performing a calorimetry experiment : Imagine you are performing a calorimetry experiment using a constant-pressure calorimeter. First, you calibrate the calorimeter using the reaction of KOH with HCl (enthalpy = -56.2 kJ/mol). Then, you use the calorimeter to investigate the dissolut..
Calculate the melting temperature of copper : Assuming that all the energy supplied was radiated and that the radiation from the glass tube is negligible, calculate the melting temperature of copper.
Explain the cycle of abuse in domestic violence situations : Your probation officer supervisor, Sarah Harris, explains to you that a majority of her caseload involves adults with substance abuse and domestic violence issues. You will need to prepare a report for her defining domestic violence. The following..
How will this action affect the deficit : (Hint: What will happen to tax receipts and interest expenses?) If the government wants to offset the effects of the Fed's actions on aggregate demand, what might it do? How will this action affect the deficit?
Imagine you are performing a calorimetry experiment : Imagine you are performing a calorimetry experiment using a constant-pressure calorimeter. First, you calibrate the calorimeter using the reaction of KOH with HCl (enthalpy = -56.2 kJ/mol).

Reviews

Write a Review

Chemistry Questions & Answers

  On being heated in air a mixture of feo andfe2o4 picks up

on being heated in air a mixture of feo andfe2o4 picks up oxygen so as to convert completely to fe2o3. if the

  What is the lattice energy of crystalline calcium chloride

Given the tabulated data, what is the lattice energy of crystalline calcium chloride?

  Why are system engineering evaluation and feedback important

Why are system engineering evaluation and feedback important? Describe some of the benefits that can be realized through the implementation of such a capability. What is likely to occur should such a capability not be implemented?

  Define the solubility of m(oh)2 in a solution buffered at ph

Consider an amphoteric hydroxide, M(OH)2(s), where M is a generic metal. Estimate the solubility of M(OH)2 in a solution buffered at pH = 7.0, 10.0, 14.0

  Question 1 the variation of emf for the cell below with

question 1 the variation of emf for the cell below with temperature is shown in the graph below.nbspzns zncl2 aqueous

  Explain components are glycerol and butanoic acid

Draw the fat molecule whose components are glycerol and butanoic acid. You may omit hydrogen atoms.

  Complete combustion of a hydrocarbon

Complete combustion of 6.00 g of a hydrocarbon produced 19.3 g of CO2 and 6.58 g of H2O. What is the empirical formula for the hydrocarbon?

  Explain spectroscopic or chemical tests

Describe spectroscopic or chemical tests to distinguish between the following pairs of compounds

  Explain the bar is heated until it increases length

A cylindrical bar of copper 1.25 meters long and 2.22cm in diameter is initially at a temperature of 14°C. The bar is heated until it increases length by 1.77mm.

  What is the percent yield of o2 produced in the reaction

What is the mass in grams of O2 gas that was produced in the reaction as described above. What is the percent yield of O2 produced in the reaction

  Evaluate the standard cell potential at 25 degrees celsius

Calculate the standard cell potential at 25 degrees celsius for the reaction X(s)+2Y+(aq) -> X^2+(aq)+2Y(s) where delta H = -733 kJ and delta S = -279 J/K Express your answer to three significant figures and include the appropriate units.

  Starting with only the solid it is found that 40 degrees

ammonium carbonate nh4co2nh2 decomposes as followsnh4co2nh2sltgt 2nh3g co2gstarting with only the solid it is found

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd