Saturday
December 20, 2014

Homework Help: Chemistry

Posted by Meenaakshi on Friday, March 23, 2012 at 8:33am.

500.0mL of 0.220 mol/L HCl(aq) was added to a high quality insulated calorimeter containing 500.0mL of 0.200mol/L NaOH(aq).Both solutions had a density of 1.000g/mL & a specific heat of 4.184 J/g.K. The calorimeter had a heat capacity of 850.0 J/degree C. The temperature of the entire system changes from 25.6 to 26.7C. Calculate dH in kJ/mole for NaOH.

I know the initial part of this problem.
q = mcdT
m of HCI = density X volume
= 1 g/ml X 500ml= 500 g
m of NaoH = 1g/mL X 500ml = 500 g

q = (500+500)(4.184)(1.1)
= 4602.4 J

Hope my approach is correct to this point.My problem is I don't know how to relate the heat capacity of calorimeter to the problem and how to find dH of NaOH eventually.
Need help. Thank you.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - 500.0 mL of 0.220 mol/L HCl(aq) was added to a high quality ...
chemistry - When 50.0mL of 1.20 M of HCl (aq)is combined with 50.0mL of 1.30 M ...
Chemistry - A common laboratory reaction is the neutralization of an acid with a...
chemistry - a student mixed a 50.0mL of water containing 0.50 mols of HCl at 22....
chemistry - in one experient, a student placed 50.0ml of 1.00molar Hcl at 25....
Chemistry - Please help me figure out where I went wrong. HNO3 + KOH -> KNO3...
ap chemistry!! help!! - some solutes have large heats of solution, and care ...
chemistry - calculate the pH of the solution when 25.0ml of 0.0920M HCL is ...
Chemistry - In one trial of an investigation 50.0 mL of HCl(aq) of an unknown ...
chemistry - Which of the following when added to 100.0mL of a 0.100M soln of ...

Search
Members