Wednesday
October 22, 2014

Homework Help: Chemistry

Posted by Kimmy on Sunday, November 19, 2006 at 9:59am.

1. The standard heat of formation of glucose and lactic acid are -1274.45 and -694.04 kJ/mole, respectively. The molar heat capacity of the two compounds are 218.86 and 127.6 J/(mol)K
a.) What is the total heat of reaction at 25 degree Celsius for the formation of lactic acid from glucose?
b.) What value would be estimated for the heat of the reaction proceeded at the physiological temperature of 37 degree Celsius?

How many moles of lactic acid will yield from one mole of glucose. Multply that number by the Hf lactic acid, and subtract one glucose Hf.


How about the change in the temperature? Would it cause the answers to somehow change? Isn't it that Hf depends on the temperature also?

Yes, you have to correct that according to the correction model in your text. There are several correction models, I do not know which one you have been exposed to.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - When 0.3212g of glucose was burned in bomb calorimeter of ...
Chemistry - The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1...
Chemistry - The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1...
Chemistry - The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1...
Chemistry - When pure sulfuric acid is dissolved in water,heat is evolved.To a ...
science - Calculate the heat of combustion of candle wax in kJ/mole. The ...
ThermoChemistry - Calculate the final temperature of solution when 10 g of ...
Chemistry - It's a molar heat reaction lab. 0.07g Mg Mg+2HCl->MgCl2+H2 What ...
Chemistry - Lithium metal is a highly reactive metal that oxidizes instantly in ...
Chemistry - The specific heat of a solution is X J/g*degreesC and its density is...

Search
Members