Question

Given the data in the table below, what is the enthalpy of dissolution of KOH? The...

Given the data in the table below, what is the enthalpy of dissolution of KOH? The molar mass of KOH is 56.11 g/mol, the specific heat of solution is 4.184 J/gºC, and the calorimeter constant is 22.45 J/ºC. To receive full points for this question, list every step of your calculation.

mass of water added to the calorimeter 50.000 g

initial temperature of the water 22.0 ºC

mass of KOH added to the calorimeter 1.824 g

final temperature in the calorimeter 29.9 ºC

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Compute for the enthalpy (heat) of dissolution of a salt (NH4Cl) in Joules using the following...
Compute for the enthalpy (heat) of dissolution of a salt (NH4Cl) in Joules using the following data: Mass of salt, g = 5.00 Mass of calorimeter, g = 5.10 Mass of calorimeter + water, g = 30.204 Initial Temperature, °C = 25.35 Final Temperature. °C = 17.19 Use the following: MWNH4Cl = 53.5 g/mol Specific HeatNH4Cl = 1.57 J/g·°C
The enthalpy change for the dissolution of NH4NO3 is +26.8 kJ/mol. When 40.0 g of NH4NO3...
The enthalpy change for the dissolution of NH4NO3 is +26.8 kJ/mol. When 40.0 g of NH4NO3 dissolves in 250.0 g of water in a coffee cup calorimeter, what will the final temperature of a solution be if it was initially at 25.0 °C? Assume that the heat capacity of the solution is the same as the specific heat of pure water, 4.184 J/(g·K). Hint: don't forget to add the masses of solute and solvent.
When a solid dissolves in water, the solution may become hotter or colder. The dissolution enthalpy...
When a solid dissolves in water, the solution may become hotter or colder. The dissolution enthalpy (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 10.13 g K2SO4(s) is dissolved in 114.80 g water, the temperature of the solution drops from 24.11 to 20.86 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.77 J/°C. Based on...
A student determines the heat of dissolution of solid ammonium bromide using a coffee-cup calorimeter of...
A student determines the heat of dissolution of solid ammonium bromide using a coffee-cup calorimeter of negligible heat capacity. When 6.34 g of NH4Br(s) is dissolved in 119.00 g of water, the temperature of the solution drops from 25.00 to 22.76 °C. Based on the student's observation, calculate the enthalpy of dissolution of NH4Br(s) in kJ/mol. Assume the specific heat of the solution is 4.184 J/g°C. ΔHdissolution =  kJ/mol
An object with a specific heat of 0.800 J/gºC at a temperature of 405 ºC is...
An object with a specific heat of 0.800 J/gºC at a temperature of 405 ºC is placed in a calorimeter with a heat capacity of 2.00 J/ºC that contains 100.0 mL of water. The initial temperature of the water and the calorimeter is 25.3ºC. After the object is added to the calorimeter, the final temperature of the calorimeter, water, and object is 29.8ºC. What is the mass of the object in grams?
coffee cup calorimeter contained 50.0 mL of a 1.33 M KOH solution at an initial temperature...
coffee cup calorimeter contained 50.0 mL of a 1.33 M KOH solution at an initial temperature of 23.3 ºC. A student quickly add 40.0 mL of 1.54 M HNO3 to the calorimeter. The maximum temperature reached during the neutralization reaction was 29.1ºC. assume specific heat of solution is the same as specific heat of water = 4.18 J/gºC assume density of both KOH and HNO3 are the same as water = 1.00 g/mL _________________________________________________________________ This is more of a question...
If 3.403 g KOH are dissolved in 100.327 g H2O and the temperature increases by 4.28...
If 3.403 g KOH are dissolved in 100.327 g H2O and the temperature increases by 4.28 oC, the enthalpy of dissolution of KOH in water is ___ kJ/mol. Assume the specific heat of the resulting KOH solution is 4.18 J g-1oC-1.
When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the...
When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 25.18 ˚C to 47.53 ˚C. Calculate the ∆Hrxn for the dissolution process. Assume that the solution has a specific heat capacity of 4.184 J/gK
How does the temperature and specific heat capacity of a sample of water (the calorimeter) change...
How does the temperature and specific heat capacity of a sample of water (the calorimeter) change as a different mass or temperature of hot metal is added to it? How does the temperature and specific heat capacity of a sample of water (the calorimeter) change as the volume of water is changed? How does the molar enthalpy of dissolution change with the amount of substance added to water? How does the molar enthalpy of dissolution change with the volume of...
A 1.000 g sample of octane (C8H18) is burned in a bomb calorimeter containing 1200 grams...
A 1.000 g sample of octane (C8H18) is burned in a bomb calorimeter containing 1200 grams of water at an initial temperature of 25.00ºC. After the reaction, the final temperature of the water is 33.20ºC. The heat capacity of the calorimeter (also known as the “calorimeter constant”) is 837 J/ºC. The specific heat of water is 4.184 J/g ºC. Calculate the heat of combustion of octane in kJ/mol.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT