How Do You Calculate the mmole of Ca2+ Exchanged by Zeolite in a Lab Titration?

In summary, the conversation revolves around determining the mmole of Ca2+ present in two different samples through titration. The first sample is a CaCl2 stock solution and the second is a filtrate solution with zeolite. The question also involves calculating the mmole of Ca2+ exchanged by the zeolite and the amount per gram of zeolite used. The solution includes using the given equations and finding the initial mmole of Ca2+ and fitting in the titration data.
  • #1
Cox
2
0

Homework Statement


Firstly, I have done the bulk of the lab but me and my lab partner cannot determine somethings and we are confused!

- Calculating the mmole of Ca2+ ion present in each sample titration
In titration #1 the beaker contained 1.00ml .15 M CaCl2 stock solution (with EDTA Buffer and Indicator). The Volume of EDTA titrated was 22.60 ml.

In titration #2 we had a 1.00ml (2g zeolite/50ml CaCL2) filtrate solution (with EDTA Buffer and Indicator). The Volume of EDTA titrated was 18.4 ml.

Then the second question is how do we calculate the mmole of Ca2+ exchanged by zeolite and also in per gram zeolite used!

(General directions would help so much)

Homework Equations


2NaAlO2 + 2Na2SiO3 ∙ 5H2O → Na2Al2Si2O8 + 4.5H2O + 4NaOH + 3.5H2O



The Attempt at a Solution


We found the initial mmole of Ca2+ but we do not know how to fit in the titration data.

We did .15 mol X .001L =.00015 M x 1000ml/L = .15 mmol/Ca2+

If anyone could clue us in the correct direction that would be great!
 
Physics news on Phys.org
  • #2
nm i got it :)
 
  • #3


I would suggest that you review the purpose of the lab and the concepts behind it. It seems like you are trying to determine the amount of Ca2+ exchanged by zeolite, which is a common application of zeolite in water treatment. The first step would be to understand the reaction that occurs between zeolite and Ca2+ ions, which can be represented by the equation you provided. This reaction results in the exchange of Ca2+ ions for Na+ ions in the zeolite structure.

To calculate the mmole of Ca2+ exchanged by zeolite, you will need to use the titration data. In titration #2, you have a filtrate solution that contains the Ca2+ ions that were exchanged by the zeolite. By titrating this solution with EDTA, you can determine the amount of Ca2+ ions present. This value, along with the initial mmole of Ca2+ (calculated in titration #1), can be used to calculate the mmole of Ca2+ exchanged by the zeolite.

To calculate the mmole of Ca2+ exchanged per gram of zeolite, you will need to know the mass of zeolite used in titration #2. This can be determined by subtracting the mass of the empty filter paper from the mass of the filter paper with the zeolite. Once you have the mass of zeolite, you can use it to calculate the mmole of Ca2+ exchanged per gram of zeolite.

In summary, to calculate the mmole of Ca2+ exchanged by zeolite and the mmole of Ca2+ exchanged per gram of zeolite, you will need to use the titration data and the initial mmole of Ca2+. Make sure to double check your calculations and review the concepts behind the lab to ensure accuracy. If you are still stuck, consult your lab manual or ask your instructor for clarification. Good luck!
 

Related to How Do You Calculate the mmole of Ca2+ Exchanged by Zeolite in a Lab Titration?

What is zeolite analysis and why is it important?

Zeolite analysis is a process of examining and identifying the types and amounts of ions present in a sample of zeolite, a porous mineral commonly used in industrial applications. It is important because it helps determine the quality and potential uses of zeolite, as well as identifying any impurities that may affect its performance.

What methods are used in zeolite analysis?

The most common methods used in zeolite analysis include X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). XRD is used to determine the crystal structure and composition of zeolite, while SEM and EDS can provide information on the surface morphology and elemental composition of the sample.

What are some common ions found in zeolite?

The most common ions found in zeolite include sodium, potassium, calcium, magnesium, and aluminum. These cations are often exchanged for other cations in the zeolite structure, such as heavy metals or ammonium ions, to increase its selectivity and adsorption properties.

Can zeolite analysis be used to determine the ion exchange capacity of zeolite?

Yes, zeolite analysis can provide information on the ion exchange capacity of zeolite. This is determined by measuring the amount of exchangeable cations present in the zeolite sample and is an important factor in determining the effectiveness of zeolite for certain applications.

What are the main applications of zeolite analysis?

Zeolite analysis is commonly used in industries such as petrochemical, water treatment, and pharmaceuticals. It can also be used in environmental studies to assess the potential of zeolite for remediation of contaminated soils and groundwater. Additionally, zeolite analysis is important for researching and developing new uses for this versatile mineral.

Similar threads

How Do You Calculate Water Hardness and Molarity in EDTA Titration?
    • Biology and Chemistry Homework Help
Replies
3
Views
17K

Hot Threads

Recent Insights

Back
Top