Taher Rabizadeh

10 Questions 4 Answers 0 Followers

Questions related from Taher Rabizadeh

Which equation is correct for the second order reaction?

Hi, I would appreciate it if you could explain to me which equation is correct for the second-order reaction. In the most textbooks I see "K" instead of "2K" in the equation. Please also see the...

14 April 2023 2,906 5 View

Is it possible to reveal the surface adsorption of an inhibitor by ""time-resolved" electrochemical impedance spectroscopy ?

Dear researchers, I would appreciate if you could guide me on the following question: I put a mild steel specimen in 0.1 M HCl solutions without and with an amino acid corrosion inhibitor. I...

14 June 2018 9,482 3 View

How can I fit the "Inductor" in electrochemical impedance spectroscopy?

Hi every body, I added an inhibitor to the 1 M HCl solution and assessed the corrosion behavior of mild steel by electrochemical impedance spectroscopy. Would you please tell me which EIS...

31 May 2018 8,679 4 View

What does a decrease in FTIR peaks intensity show?

I analyzed two kinds of powders (gypsum, gypsum+additives) by FTIR (attached file). There is decrease in peaks intensity and absorbance. What does it show? Can it be just because of the amount of...

22 May 2015 2,515 35 View

Can 31P NMR help me to measure the phosphonate concentration in solutuion?

Hi all, I would appreciate if you could guide me.My solution contains 2500ppm calcium, 5000ppm sulphate, 8000ppm sodium, 8000ppm chloride and I add 10ppm NTMP (nitrilotri(methylenephosphonic)...

17 March 2015 1,890 4 View

What is the best way to measure nitrilotris methylene phosphonic acid concetration in solution?

Dear Researchers, I added 10ppm "nitrilotris methylene phosphonic acid" (NTMP) to water and I want to measure the P concentration during the time. Would you please guide me to measure the P...

06 March 2015 2,114 1 View

Is there any reliable free software to draw the acid dissociate vs. pH plot?

Is there any reliable free software to draw the acid dissociate vs. pH plot? For example, in the case of citric acid at pH=7, the portion of the ions in the solution?

06 April 2014 7,222 4 View

How can I name the faces of gypsum crystals from XRD patern?

I have an XRD pattern of gypsum crystals and I want to determine if each peak is related to which face. Would you please help me? I attached the information. Would you please also guide me why...

02 February 2014 5,991 2 View

How can I interpret gypsum crystal morphology change via XRD and SEM?

Would you please guide me about questions below via the attached file: I mixed calcium chloride and sodium sulfate and precipitated prismatic monoclinic needle shape gypsum crystals that SEM (fig...

01 February 2014 4,024 6 View

How can I prove elongation of gypsum crystals by XRD?

I did an XRD test for gypsum crystals which have a needle shape. One peak has much more intensity than others. I have other kinds of gypsum crystals which have been produced in other conditions...

03 January 2014 1,076 8 View