The proportion of Hydrogen to limit errors in measurement.

In summary, the proportion of Hydrogen in measurement is significant as it can affect the accuracy of results. Controlling the proportion of Hydrogen is crucial to prevent errors and inaccuracies. Various methods can be used to control the proportion of Hydrogen, but it can still vary greatly in different samples. Not considering Hydrogen in measurement can lead to significant consequences, affecting the reliability and validity of results in scientific research.
  • #1
rrab186
5
0
It is proposed to use a katharometer to mesaure the amount (about 5%) of oxygen in nitrogen, in the presence of a small amount (0.5%) hydrogen. How constant would the proportion of hydrogen have to be in order to limit errors in measurement of % oxygen to +/- 0.1%?

The thermal conductivities are:
Nitrogen 0.993
Oxygen 1.052
Hydrogen 6.993

Not to sure where to start with this one, any guidance just to start me off would be most appreciated.
 
Physics news on Phys.org
  • #2
An approximation of the mixture's thermal conductivity can be expressed as the mole fraction-weighted sum of the individual components. For example,

λm = χ1λ1 + χ2λ2 +… χnλn
 

What is the significance of the proportion of Hydrogen in measurement?

The proportion of Hydrogen plays a crucial role in limiting errors in measurement as it is the lightest element and can easily escape from a sample during measurement, leading to inaccurate results.

How does the proportion of Hydrogen affect the accuracy of measurement?

The presence of Hydrogen in a sample can cause a loss of weight and volume, resulting in underestimation of the actual values. Therefore, controlling the proportion of Hydrogen is essential for accurate measurement.

What methods can be used to control the proportion of Hydrogen in measurement?

Some common methods to limit the proportion of Hydrogen in measurement include purging the sample with an inert gas, using a vacuum to remove Hydrogen, and performing measurements at low temperatures to reduce Hydrogen's evaporation.

How does the proportion of Hydrogen vary in different samples?

The proportion of Hydrogen can vary greatly in different samples due to variations in composition, temperature, and other factors. Therefore, it is crucial to determine and control the proportion of Hydrogen in each sample separately.

What are the consequences of not considering the proportion of Hydrogen in measurement?

Not considering the proportion of Hydrogen in measurement can lead to significant errors and inaccuracies, ultimately affecting the reliability and validity of the results. It is essential to account for Hydrogen to ensure the accuracy of measurements in scientific research.

Similar threads

Solve Katharometer Question: Limit Errors to +0.1% Oxygen
    • Biology and Chemistry Homework Help
Replies
1
Views
2K
Error calculation in a measurement chain
    • Introductory Physics Homework Help
Replies
7
Views
1K
Problem about the law of multiple proportions (includes solution)
    • Biology and Chemistry Homework Help
Replies
12
Views
20K
B Implicit error margins based on significant figures
    • Classical Physics
Replies
18
Views
1K
I Empirical temperature scales using different thermometers
    • Classical Physics
Replies
7
Views
852
Measuring the temperature of a combustion
    • Chemistry
Replies
4
Views
2K
Error analysis: propagation of error
    • Introductory Physics Homework Help
Replies
15
Views
2K
Is my fictional Solar System stable and realistic?
    • Sci-Fi Writing and World Building
Replies
21
Views
1K
B Is spacetime a quantum error correcting code?
    • Quantum Physics
Replies
2
Views
1K
Type Ia Supernova not Standard Candles? I'm confused .
    • Cosmology
Replies
16
Views
3K

Hot Threads

Recent Insights

Back
Top