All Questions
Tagged with temperature experimental-chemistry
20 questions
0
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4
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472
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Storage of air and temperature sensitive reagents [closed]
What's your method for storing air/moisture and temperature sensitive reagents? For example:
A solid. Should I just blow some argon, screw the lid, put parafilm and put it in the fridge? Can a ...
user78790
-1
votes
1
answer
210
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Is there any chemical that can react with two different chemicals to generate heat or cold? [closed]
For example. There are three chemicals. Chemical A,B,C
Chemical B react with Chemical A = heat
Chemical B react with Chemical C = cold
Is there any chemical available like this? And is it safe to ...
- 7
1
vote
0
answers
724
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How does the temperature of HCl affect the reaction rate of HCl & Mg reaction?
I'm Olivia. I'm experimenting with HCl and Mg. My purpose is to find the change of the reaction rate while I increase the temperature of HCi.
According to the study, when I increase the temperature of ...
- 11
0
votes
1
answer
294
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What would happen to the cell potential if two half cells of a galvanic cell were at different temperatures?
I'm doing an experiment where I'm investigating the effect of temperature of the galvanic cell on the cell potential. But during the experiment, I noticed that the two half cells were at different ...
- 1
-1
votes
1
answer
594
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How would one determine the temperature needed such that hydrogen peroxide will start to decompose? [closed]
Hydrogen peroxide decomposes at room temperature and so I was wondering what temperature is sufficient for this decomposition to occur.
Can someone explain how we can determine this? (theoretically or ...
0
votes
1
answer
109
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Can heat capacity at constant volume for a gas decrease as temperature increases? [closed]
I found a function for the $C_V$ of a gas which is being heated under constant volume,but the function shows that the $C_V$ is decreasing. I was wondering if this is possible for any gas since I know ...
0
votes
1
answer
441
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Measuring heat effect of reaction
I did an experiment to determine enthalpy change when Zinc is added to Copper(II) sulphate solution.
I recorded values and plotted a temperature-time graph to obtain values of the temperature change ...
- 409
7
votes
2
answers
12k
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How to calculate percent error for absolute zero?
In chemistry lab, we did an experiment with water of various temperatures to extrapolate a value for absolute zero based on experimental pressure values for water at different temperatures. Naturally, ...
- 171
1
vote
1
answer
78
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Hydration reaction
Currently I'm measuring the rate of completion of a hydration reaction by putting a temperature probe in the middle of a cup full of reagents and measuring the temperature in an isolated box. The main ...
- 111
1
vote
0
answers
166
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How to determine parameters range?
I am into running some leaching experiments and wanted to study the effect of different parameters on my dissolution results. But I am confused with determining the parameters range. For example, I ...
- 13
8
votes
1
answer
715
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How would you measure the rate of this SN1 reaction?
I am performing the following $\mathrm{S_N1}$ reaction:
$$\ce{t-BuOH + HCl -> t-BuCl + H2O}$$
I would also like to measure the rate of this reaction, but I cannot seem to find a way. I initially ...
- 667
11
votes
0
answers
96
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Is there a structured data source containing information on the World Health Organisation's Stability Testing Policies?
Hoping to automate some product testing guidance software, I've been attempting to find a (hopefully live, up-to-date) Database, Web-service, or other structured data source containing the ...
- 111
2
votes
2
answers
141
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Is there a way to counteract the problems with weighing hot objects?
I am currently performing an experiment in which it would be greatly beneficial to be able to accurately measure the mass of a hot object without waiting for it to cool. The current plan is simply to ...
1
vote
0
answers
26
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Parameter effects on kinetics of esterification for bio-diesel production
I want to discuss the effect of parameters on the kinetics of esterification for bio-diesel production. In esterification process, temperature effect and molar ration are two important parameters. ...
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7
votes
4
answers
16k
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How do I control the negative temperature in an experiment?
If one were to adjust the positive temperature in an experiment, they would use a heating plate, or a stovetop.
How would one adjust negative temperatures in an experiment? (Not keeping the ...
- 417
3
votes
2
answers
1k
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What equipment to use to make liquid oxygen?
I'd like to do some experiments with liquid oxygen but as a first step I'll have to make some. Unfortunately I don't have any experience designing cryogenic experiments. I'm thinking I'll cool gaseous ...
- 31
2
votes
1
answer
107
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Container to supercool water
The internet is full of videos like this showing water bottles for drinking used to supercool water. These bottles, not unexpectedly, appear a bit finicky, since they have lots of edges to serve as ...
- 1,690
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0
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94
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How can I use sunlight to heat a RBF and reflux a reaction?
This may seem like a off topic question but I really need help on it. I am currently working on a polymerization reaction in which I'm breaking down plastic polymers into smaller molecules. However, ...
5
votes
1
answer
747
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Can I get an accurate temperature reading from a flask with a built-in thermometer well?
I recently purchased a flask with a built in thermometer well, but I have discovered that simply setting a rod thermometer in the well does not produce a very accurate reading. I was wondering if ...
- 171
3
votes
0
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119
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Target temperature for infused cooking oil
A little context: I make craft chili oils for friends and family. I use a two-step infusion process. First, I infuse the oil for flavor by simmering spices in the oil held around 250 degrees ...
- 31