User Account

All Pages

Imagine you are performing a calorimetry experiment

Assignment Help Chemistry
Reference no: EM131353827

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: EM131353827

Questions Cloud

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).
What is secret to continued success of southwest as business : Skim over the article below about Southwest Airlines from 1996, then read the article from February of this year. What is the secret to the continued success of Southwest as a business?
Calculate the surface temperature : The solar constant is the incident energy per unit of time on a unit area of a surface placed at right angles to a sunbeam just outside the earth's atmosphere.- Assuming that the sun is a blackbody, calculate its surface temperature.
Calculate the freezing point of sea water : For this question imagine that sea water is a 3.5 mass % solution of NaCl with a density of 1.00g/mL. Assume full dissociation of the NaCl. a) Calculate the freezing point of sea water. Briefly explain why it is not 0 (degrees Celsius).
Identify one organization that belongs to the public sector : For this discussion, you are a college student looking for an internship. Identify one organization that belongs to the public sector, such as Big Brothers and Big Sisters of America and another from the business sector, such as the National Feder..

Reviews

Write a Review

Chemistry Questions & Answers

  State what is the temprature at the condenser outlet

degress Celcius and 1 atm enters a coller in which 55% of the feed is condensed at a constant pressure. What is the temprature at the condenser outlet and explain?

  Calculate the molar solubility s of barium in a solution

Problem- Given that Ksp=8.1 x 10^-9 for barium carbonate, BaCo3, and the Ka2=4.8x10^-9 for carbonic acid, H2CO3, calculate the molar solubility S of barium in a solution buffered at a pH of 4.00

  What is the vapor pressure of a solution

At 55.0C, what is the vapor pressure of a solution prepared by dissolving 75.8 g of LiF in 265 g of water?

  Explain what exactly is it about cl that causes difference

Explain why does CH2Cl2 solvent (lower layer) have higher density than water while non-chlorinated solvents like hexanes and ether (top layer) have lower density than water, i.e. Explain what exactly is it about Cl that causes this difference

  Define what is the titratable acidity assuming tartaric acid

if 10.3 mL of 0.100 N NaOH is used to bring 10.0 mL of juice to a pH of 8.20, what is the Titratable Acidity (g/L) assuming tartaric acid is 7.50 eq/L

  Explain what is the mass of a piece of magnesium wire

What is the mass of a piece of magnesium wire which produces 39.30 mL of hydrogen gas collected over water at 23 degrees celsius

  Explain what are the partial pressures of n2 and h2o

What are the partial pressures of N2 and H2O. (NH4)2Cr2O7(s) ? N2(g) + 4 H2O(g) + Cr2O3(s) I answered .066 atm

  Photochemical reactions often produce different products

Question- Photochemical reactions often produce different products than thermal reactions with the same reactants. Why

  Explain how many grams of zn have been consumed

If 160mL of wet H2 is collected over water at 24 degrees Celsius and a barometric pressure of 738torr , how many grams of Zn have been consumed

  Explain what is the ph of a sodium formate solution

What is the pH of a sodium formate solution prepared by adding 0.680 grams of sodium formate to 100.0 mL of water at 25.0 degree C? Ka of formic acid at 25.0degree C is 1.8*10-4.

  Demonstrate the mechanism and all steps involved in reaction

NaBH4 and ethanol are utilized in the reaction to add hydrogen to a carbonyl group and the OH hydrogen comes from the ethanol. The mechanism is a reduction. Demonstrate the mechanism and all steps involved in the reaction.

  Explain a solution of h2so4(aq) with a molal concentration

A solution of H2SO4(aq) with a molal concentration of 4.80 m has a density of 1.249 g/mL. What is the molar concentration of this solution

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