How to calculate the molar enthalpy change

Assignment Help Chemistry
Reference no: EM13295177

0.7180 ± 0.0002 g of KNO3 was added to 100.00 ± 0.02 g of H2O in a solution calorimeter.

(a) Calculate ?Hrxn if Csystem = 121.46 ± 1.23 cal/°C and ?T = -0.508 ± 0.009 °C.

(b) Calculate the error in ?Hrxn.

(c) Calculate the molar enthalpy change ?H~rxn for the dissolution of KNO3 in water.

(d) Calculate in the error in ?H~

Reference no: EM13295177

Questions Cloud

How to calculate the molar enthalpy change : Calculate the molar enthalpy change ?H~rxn for the dissolution of KNO3 in water. Calculate in the error in ?H~
Use the du pont system to calculate the return on assets : Insert the appropriate dollar amounts wherever possible. c. Use the Du Pont system to calculate the return on assets for the two years, and determine why they changed.
What are the 1 year holding period returns for each : What are the 1 year holding period returns for each of these bonds? Do this both for zero coupons and par bonds. Please show work.
Find magnitude of kinetic friction force acting on childe : A 30kg child slides down a playground slide at a constant speed. find the magnitude of the kinetic friction force acting on the child
How to calculate the molar enthalpy change : Calculate the molar enthalpy change ?H~rxn for the dissolution of KNO3 in water. Calculate in the error in ?H~
Estimate the firm external financing needs : Estimate the firm's external financing needs by using the percent-of-sales method for the 2012 data. Assume that no excess capacity exists and that one-half of the 2012 net income will be retained in the business.
Determine the magnetic force on the bolt : An iron bolt of mass 70.0 g hangs from a string 35.2 cm long. The top end of the string is fixed. Find the magnetic force on the bolt
What is the maximum lump sum payment you are willing to make : What is the maximum lump sum payment you are willing to make today to buy these six future annual shipments?
Estimate the effective spring constant of the molecule : A molecule of DNA (deoxyribonucleic acid) is 2.08 µm long. The ends of the molecule become singly ionized: negative on one end, Determine the effective spring constant of the molecule

Reviews

Write a Review

Chemistry Questions & Answers

  Explain butane c4h10 is a component of natural gas

Butane C4H10, is a component of natural gas that is used for cigarette lighters. The balanced equation of the complete combustion of butane is

  Consider the four equations of states

Consider the four equations of states(EOS) below describing PVT behavior of gases. Let a and b be constants. EOSI : PV = RT EOSII: (P-a)V = RT EOSIII: P(V-b) = RT EOSIV: P = RT/(V-b) - a/V (a) Prove for EOSI that both U and H are functions of T on..

  What generalization can you make about the rotation

What generalization can you make about the rotation of a Fischer projection formula in the plane of the paper? Answer a. 90° rotation results in an enantiomer, 180° rotation results in the identical molecule.

  How many grams of chromium will be plated

Chromium metal can be plated from an acidic solution of CrO3.  CrO3(aq) + 6H+(aq) + 6e- -> Cr(s) + 3H2O  How many grams of chromium will be plated by the passage of 19,300 C (coulombs)?

  How to compute the composition of the vapor

Calculate the composition of the vapor (mole fraction of each component) that is in equilibrium in the solution at the boiling point of this solution

  Explain the chemistry involved in the current indstrial

Describe the chemistry involved in the current indstrial preparation of adipic acid, specifically listing the major by-product

  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.

  What is the molecular weight of the gas

If 405 mL of a gas at 66 degrees Celsius and 595 mm Hg weighs 1.495g, what is the molecular weight of the gas?

  Calculate the calorimeter constant for the coffee cup

If the initial temperature of the water in the calorimeter was 20.25 °C, calculate the calorimeter constant (in J/K) for the coffee cup calorimeter.

  What is the molecular formula of the c, h, s compound

The BaSo4 was found to have a mass of 11.96 mg. The molecular weight of the compound was found to be 168 g/mol. Using this data, what is the molecular formula of the C, H, S compound?

  How many iron atoms would have to be laid side

The radius of a iron atom is 124 pm. How many iron atoms would have to be laid side by side to span a distance of 1.71 mm?

  Explain methyl-pentane with nacn and agcn

Draw all products of the reactions of 4-Chloro-2-methyl-pentane with NaCN and AgCN. Identify the reaction mechanisms and draw resonance

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