Wednesday
October 1, 2014

Homework Help: Chemistry

Posted by Carrie on Saturday, December 31, 2011 at 7:21pm.

This is a lab I have, but have no clue what to do. Please do out the steps so i can understand.

Reactions and Data:
NaOH(s)--> Na1+(aq)+ OH1-(aq)

(Heat of solution of NaOH)
This reaction involves adding solid NaOH to water and watching the temperature change as it dissolves.

Trial 1: 1.98 g of solid NaOH is dissolved in 106.5 mL of water. The temperature goes from 22.00C to 26.50C.

Hints:Remember that you are heating water. Use the formula Q = C x M x DT. The volume of water used equals the volume of whatever solution you are using, be it NaOH or HCl. The volume must be converted to mass (1 mL of water has a mass of 1 g). The mass must be reported in kilograms.

Questions and Calculations
For each of the three reactions:
1) Calculate the heat evolved in each trial (Q).
2) Calculate the moles of NaOH used in each trial (mol).
3) Calculate how much heat would be evolved if 1 mole of NaOH was used for each trial (Q/mol).
4) Calculate the average heat per mole in each of the 3 reactions.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - hello, I have done a acid & base titration lab, with 0.1M vinegar (...
Chemistry - My teacher has us doing a virtual Titration lab on sciencegeek site ...
Chemistry - I have troubles with a titration of NaOH and HCl. The volume of the ...
chemistry - Question about titration calculations in analysis of antacids lab. ...
Chemistry - How do you balance oxidation-reduction reactions. I have all the ...
Chemistry lab - In my lab class I am having to write a lab experiment and ...
11th grade CHEMISTRY TITRATION LAB! - i have a tritation lab due tomorrow and i ...
chem lab (webwork) - What is the pH of the solution created by combining 1.80 mL...
Chemistry - Can someone please help me with the following? How do I find the ...
chemistry - I had to do this online lab and have a total of 8 questions at the ...

Search
Members