Calculate delta h in kilojoules for the reaction

Assignment Help Chemistry
Reference no: EM13692083

Question- When 1.045 g of K2O is added to 50.0 mL of water at 25 degrees celcius in a calorimeter, the temperature of the water increases to 41.5 degees C.

Assuming that the specific heat of the solution is 4.18 J/(g*C) and that the calorimeter itself absorbs a negligible amount of heat, calculate delta H in kilojoules for the reaction

K2O(s) + H2O(l) --> 2KOH(aq)

I need proficient help to working out this problem

Reference no: EM13692083

Questions Cloud

Calculate the ph of a buffer solution : Question- Use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution that is 0.28M in formic acid (HCO2H) and 0.52M in sodium formate (HCO2Na).
What is the ph after the addition of mole of hcl : A solution is prepared by dissolving 0.23 moles of hydrofluoric acid and 0.27 moles of sodium fluoride in water sufficient to yield 1.00L of solution. What is the pH after the addition of 0.05 mole of HCl. Assume that the volume does not change. (..
Boiling point of a substance is defines as the temperature : Question- The boiling point of a substance is defines as the temperature at which liquid and vapor coexist in equilibrium.
Calculate delta h in kilojoules for the reaction : Assuming that the specific heat of the solution is 4.18 J/(g*C) and that the calorimeter itself absorbs a negligible amount of heat, calculate delta H in kilojoules for the reaction
Calculate the ph of a buffer solution : Question- Use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution that is 0.28M in formic acid (HCO2H) and 0.52M in sodium formate (HCO2Na).
Determine the total energy absorbed by the tissue : In a diagnostic x-ray procedure, 5.25×1010 photons are absorbed by tissue with a mass of 0.580kg. The x-ray wavelength is 2.00 × 102 nm. What is the total energy absorbed by the tissue
Explain what is the driving force for the establishment : Question- a) Explain what is the driving force for the establishment of an equilibrium point defect concentration in metals outside of irradiation. For a solid with a vacancy formation energy of 1 e V, calculate the equilibrium vacancy concentrati..
Substances can serve as a carbon source : Question- Which of the following substances can serve as a carbon source for gluconeogenesis? Check all that apply, Lactate

Reviews

Write a Review

Chemistry Questions & Answers

  Steps in the mechanism for the following reaction

Show all the steps in the mechanism for the following reaction, When benzene is mixed with deuterated sulfuric acid, deuterium is slowly incorporated onto the ring. Show the mechanism for this reaction and explain how this relates the sulfonation of ..

  Prior to placing piece of metal into the graduated cylinder

This assignment inhibits chemistry Laboratory Questions.

  Write the structures of the saytzeff elimination

Write the structures of the saytzeff elimination

  Calculate ph - chemistry questions

Chemistry Questions on Calculate P H

  How many mols of hydrogen can produce

how many mols of H 2 can produce

  Analysis of corrosion mechanisms

Analysis of corrosion mechanisms and preventative measures

  Chemical and pharmaceutical science

Write an equation for the formation of an acetal from reaction of excess methanol with benzaldehyde in the presence of an acid catalyst.

  Calculate the approximate sulphur

Calculate the approximate SO 2 mass emission in lb/day.

  What is the structure - stereochemistry

What is the structure (including functional groups)? Stereochemistry (racemic or single enantiomer)?

  Design a qualitative analysis scheme

Design a qualitative analysis scheme

  What will be the resultant pressure

What will be the resultant pressure when the stopcock is opened?

  The 1h nmr spectrum

Integrals for some of the resonances in the 1H NMR spectrum are higher than they should be due to the shear number of hydrogens in this compound

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