Hi there,
I just need help with these 3 Calorimetry questions. Please show your work when possible. Thank you.
The three questions are based on the enthalpy of NaOH solution:
50 mL distilled water is placed in a calorimeter. 2.00 g (0.05 mol) NaOH is weighed in a dry 50 mL beaker, which is then added to the water and stirred until dissolved. Once the highest temperature has been recorded, 50 mL 1.0 M HCl is added and the solution is rinsed in the sink.
Q1) In this experiment, which of the following are the surroundings? Choose all that apply.
Select all that are True.
1. Air in the lab
2. NaOH pellets
3. Water
4. Styrofoam cup calorimeter
Last Answers: TFFT, TFTT Both are wrong
Q2) If a reaction is carried out in the calorimeter and the temperature change increases the reaction is said to be:
A) Endothermic
B) Exothermic
Q3) If the following data is collected in Part A, what is the heat capacity of the calorimeter? Answer in J/Co
Ti cool water 21.9 Ti warm water 62.4 Tf 37.4
Hi there,
I just need help with these 3 Calorimetry questions. Please show your work when possible. Thank you.
The three questions are based on the enthalpy of NaOH solution:
50 mL distilled water is placed in a calorimeter. 2.00 g (0.05 mol) NaOH is weighed in a dry 50 mL beaker, which is then added to the water and stirred until dissolved. Once the highest temperature has been recorded, 50 mL 1.0 M HCl is added and the solution is rinsed in the sink.
Q1) In this experiment, which of the following are the surroundings? Choose all that apply.
Select all that are True.
1. Air in the lab
2. NaOH pellets
3. Water
4. Styrofoam cup calorimeter
Last Answers: TFFT, TFTT Both are wrong
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