Explain and estimate the standard enthalpy of formation of h

Assignment Help Chemistry
Reference no: EM13256358

Solid benzoic acid, C6H5COOH(s), is often used to determine the heat capacity of a bomb calorimeter, because the constant volume heat of combustion of this compound is known with high precision: qV = 26.434 kJ/g. When a 2.088 g sample of C6H5COOH(s) was burned in a particular bomb calorimeter, the temperature increased by 11.77 oC. In a second experiment, a 1.217 g sample of a compound with the formula C6H14O(l) was burned in the same calorimeter. The temperature increased by 10.08 oC. Use these data, plus the information given below for CO2 and H2O, to estimate the standard enthalpy of formation, of H, at 25 oC for this compound of H values at 25 oC for CO2(g) and H2O(l) are 394 kJ mol 1 and 286 kJ mol 1, respectively.

Reference no: EM13256358

Questions Cloud

Explain what was the percentage by mass of mg(oh)2 : What was the percentage by mass of Mg(OH)2 in the original sample. When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a chloride salt, water and CO2(g)
What is the percentage change in the price of these bonds : Both Bond Bill and Bond Ted have 10.4 percent coupons, make semiannual payments, and are priced at par value. Bond Bill has 5 years to maturity, whereas Bond Ted has 22 years to maturity.
Design bandstop filter to remove noise to limit distortion : An EKG signal is contaminated by 60-Hz noise. Design a bandstop filter to remove this noise while limiting distortion of the EKG signal. Sketch the magnitude and phase response.
Numerical methods by explicit or implicit methods : Solve this equation numerically and numerical methods by explicit or implicit methods or crank niclson method
Explain and estimate the standard enthalpy of formation of h : The temperature increased by 10.08 oC. Use these data, plus the information given below for CO2 and H2O, to estimate the standard enthalpy of formation, of H, at 25 oC for this compound of H values at 25 oC for CO2(g) and H2O(l) are 394 kJ mol 1 a..
What is the effective or equivalent : paying in 65 days and thus becoming 35 days past due - without a penalty because its suppliers currently have excess capacity. What is the effective, or equivalent, annual cost of the trade credit?
Describe the structure of the compound k2o : The structure of the compound K2O is best described as a cubic closest packed array of oxide ions with the potassium ions in tetrahedral holes. What percent of the tetrahedral holes are occupied in this solid
What was the firm cash flow to creditors during 2009 : The 2008 balance sheet of Maria's Tennis Shop, Inc., showed long-term debt of $3 million, and the 2009 balance sheet showed long-term debt of $4 million. The 2009 income statement showed an interest expense of $330,000. What was the firm's cash fl..
What is the wavelength of the sound waves : The frequency of sound waves in air from a violin string are around 570 Hz. what is the wavelength of the sound waves

Reviews

Write a Review

Chemistry Questions & Answers

  Explain use naoh base for titration

we use 1 g of unknown acid added with 120 mL of distilled water ,the solution filtered , then we took 25 mL of this unknown acid for titration. we use NaOH base for titration

  Explain stoichiometry explained in this solution

Stoichiometry explained in this solution, If the yield of CO2 (g) from the reaction of butane with hydrogen peroxide is only 80.65%, with how many grams of butane and hydrogen peroxide

  Define the sybolic representation for the galvanic cell

If the electrochemical cell is allowed to operate as a gavanic cell, which solution species will be oxidized, which solution species will reduce. write the sybolic representation for the galvanic cell.

  Define what is the atomic mass of the element

A new atom is found that has 3 isotopes with masses of 262, 263 and 265. If the first is 0.17 abundant and the second is 0.41 abundant, what is the atomic mass of the element (give your answer to 2 decimal places).

  Which is the stronger base

Which is the stronger base, HSO4- or H2O? b. Which is the stronger base, H2O or OCl-?

  How many grams of kcl is produced

2 K + Cl2 ---> 2 KCl How many grams of KCl is produced from 2.50 g of K and excess Cl2. From 1.00 g of Cl2 and excess K?

  What is the molarity of a solution

What is the molarity of a solution that contains 35.0 g of vitamin B1 hydrochloride (molar mass = 337 g/mol ) in 110 g of solution?

  How long would it take for be converted completely in steam

How long would it take for 1.50mol of water at 100.0 °C to be converted completely into steam if heat were added at a constant rate of 21.0 J/s?

  Compute the equilibrium partial pressures of all species

Calculate the equilibrium partial pressures of all species when CO and Cl2, each at an intitial partial pressure of 1.53 atm, are introduced into an evacuated vessel at 600 K.

  Compute the change in temperature

Compute the change in temperature when 2 g of sodium chloride is dissolved in 270.0 mL of water initially at 25 C. The heat capacity of water is 4.184 J/mL/K. Neglect the heat capacity of the NaCl.

  What is the ph of benzoic acid buffer solution

A buffer solution is prepared by dissolving 1.50 g each of benzoic acid, C6H5CO2H, and Sodium Benzoate, NaC6H5CO2, in a 150.00 ml of solution. The Ka for benzoic acid = 6.3E-5.

  How much heat is released

How much heat is released when 4.50 g of methane gas is burned in a constant-pressure system? CH4 (g) + 2O2(g) -> CO2 (g) + 2H2O(l) H=-890kJ

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!

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