Thursday

April 24, 2014

April 24, 2014

Posted by **fufi** on Wednesday, November 14, 2012 at 4:16pm.

When 5.00 g of NaOH(s) are added to 100 g of water using a calorimeter (with Cp = 493.24 J/K), the temperature rises from 25.0 to 37.5 °C. Calculate the molar heat of solution.

NaOH(s)--->Na(aq)+OH(aq)

Assume that the specific heat capacity of water is 4.18 J/gK and that of the NaOH(aq) solution is the same.

- chemistry -
**DrBob222**, Wednesday, November 14, 2012 at 6:28pmq = [mass H2O x specific heat H2O x (Tfinal-Tinitial)] + [Ccal x (Tfinal-Tinitial)]

Substitute and solve for q = delta H solution.

q/5.00 = delta H/gram.

delta H/g x (molar mass NaOH) = delta H in J/mol. Convert to kJ/mol.

**Related Questions**

PHYSICS VECTORS - 1. The problem statement, all variables and given/known data ...

Science - Scientific investigations involve many steps and processes. Which ...

statistics - 3. Indicate whether the given statement could apply to a data set ...

separation of variables - solve the initial value problem by separation of ...

PreCalc - [b]1. The problem statement, all variables and given/known data[/b] ...

Physics - 1. The problem statement, all variables and given/known data A point ...

Calculus - 1. The problem statement, all variables and given/known data a ball ...

Chemistry - The solubility of KCLO3 at 25 degree celcius is 10.9 per 100.g of ...

Math, Please Help!!! - 1. The problem statement, all variables and given/known ...

Physics - 1. The problem statement, all variables and given/known data The ...