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Titration Calculations: Strong Acid - Strong Base02:28

Titration Calculations: Strong Acid - Strong Base

33.8K
Calculating pH for Titration Solutions: Strong Acid/Strong Base
A titration is carried out for 25.00 mL of 0.100 M HCl (strong acid) with 0.100 M of a strong base NaOH. The pH at different volumes of added base solution can be calculated as follows:
(a) Titrant volume = 0 mL. The solution pH is due to the acid ionization of HCl. Because this is a strong acid, the ionization is complete and the hydronium ion molarity is 0.100 M. The pH of the solution is then:
33.8K
Strong Acid and Base Solutions03:22

Strong Acid and Base Solutions

35.3K
A strong acid is a compound that dissociates completely in an aqueous solution and produces a concentration of hydronium ions equal to the initial concentration of acid. For example, 0.20 M hydrobromic acid will dissociate completely in water and produces 0.20 M of hydronium ions and 0.20 M of bromide ions.
35.3K
Titration of a Strong Acid with a Strong Base01:23

Titration of a Strong Acid with a Strong Base

10.1K
During the titration of a strong acid with a strong base, pH calculations are primarily based on the concentration of residual hydronium or hydroxide ions. Initially, a strong acid like hydrochloric acid fully dissociates, creating hydronium and chloride ions, resulting in a low pH. The addition of a strong base like sodium hydroxide alters the concentration of hydronium ions by neutralizing them. As more base is added, the pH gradually increases. At the equivalence point, all hydronium ions...
10.1K
Titration Calculations: Weak Acid - Strong Base03:55

Titration Calculations: Weak Acid - Strong Base

49.1K
Calculating pH for Titration Solutions: Weak Acid/Strong Base
For the titration of 25.00 mL of 0.100 M CH3CO2H with 0.100 M NaOH, the reaction can be represented as:
49.1K
Titration of a Weak Acid with a Strong Base01:30

Titration of a Weak Acid with a Strong Base

4.3K
In titrating a weak acid with a strong base, different calculation methods are applied at various stages. Initially, the pH of a weak acid like acetic acid is calculated using its dissociation constant (Ka) and an ICE table. Upon addition of a strong base such as sodium hydroxide, a buffer forms, and its pH is determined using the Henderson-Hasselbalch equation. As more base is added and the titration reaches the halfway point, the pH becomes equal to the pKa of the acid, indicating equal...
4.3K
Titration of Polyprotic Acids with a Strong Base01:23

Titration of Polyprotic Acids with a Strong Base

2.8K
Titration of a polyprotic acid, which contains multiple ionizable protons, involves distinct dissociation steps, each with its own dissociation constant (Ka). Each successive Ka is weaker than the previous one. In the titration of a polyprotic acid like sulfurous acid with a strong base such as sodium hydroxide, the base first neutralizes the initial ionizable proton, forming an intermediate species (e.g., hydrogen sulfite ions). This step's titration curve resembles that of a weak...
2.8K

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In Vitro Method to Study Sex-Based Differences in Conjunctival Goblet Cells
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A phase difference measurement method based on strong tracking filter for Coriolis mass flowmeter.

Nan Chen1, Shangchun Fan1, Dezhi Zheng1

  • 1School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing 100191, China.

The Review of Scientific Instruments
|August 3, 2019
PubMed
Summary
This summary is machine-generated.

A new strong tracking filter method enhances Coriolis mass flowmeter accuracy by precisely tracking phase differences. This overcomes limitations of older filters, improving real-time measurement performance.

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Area of Science:

  • Metrology
  • Control Systems Engineering
  • Fluid Dynamics

Background:

  • Coriolis mass flowmeters are crucial for accurate fluid measurement.
  • Extended Kalman filters struggle with time-varying phase differences in these meters.
  • Improving phase difference estimation is key to enhancing flowmeter accuracy.

Purpose of the Study:

  • To propose a novel phase difference measurement method for Coriolis mass flowmeters.
  • To leverage a strong tracking filter to overcome limitations of existing methods.
  • To enhance the precision and reliability of Coriolis mass flowmeter measurements.

Main Methods:

  • Implementation of a strong tracking filter for phase difference estimation.
  • Development of a parallel algorithm that does not require prior signal frequency prediction.
  • Comparative analysis against traditional extended Kalman filter methods.

Main Results:

  • The proposed method demonstrates continuous and high-precision tracking of phase difference variations.
  • Elimination of quadratic error associated with frequency estimation.
  • Verified improvements in estimation performance and anti-interference capabilities through simulations and experiments.

Conclusions:

  • The strong tracking filter-based method significantly improves phase difference estimation accuracy.
  • This approach enhances the overall measurement accuracy of Coriolis mass flowmeters.
  • The method offers a robust solution for real-time, high-precision fluid measurement applications.