How Do I Calculate Powder Amount in Grams for NKBT Perovskite Material?

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Discussion Overview

The discussion revolves around calculating the appropriate amount of powder in grams for preparing NKBT Perovskite material, specifically focusing on stoichiometry and the conversion between weight and mole percentages. Participants explore methods for determining the correct quantities of various chemical powders needed for synthesis.

Discussion Character

  • Homework-related
  • Mathematical reasoning

Main Points Raised

  • One participant outlines their formula for NKBT Perovskite and asks how to calculate the required powder amounts based on stoichiometry, questioning whether to use weight percent or mole percent.
  • Another participant suggests that converting everything to grams is necessary, emphasizing the importance of calculating molar ratios before converting to weight ratios using molar masses.
  • A participant seeks confirmation on the correctness of their method for calculating the grams of NaNO3 needed for a total sample weight of 5 grams.
  • One reply indicates that the proposed method for calculating grams of NaNO3 appears acceptable.

Areas of Agreement / Disagreement

Participants generally agree on the need to convert measurements to grams and calculate molar ratios, but there is no consensus on the correctness of the specific method proposed by the original poster.

Contextual Notes

The discussion does not clarify the assumptions regarding the definitions of weight percent and mole percent, nor does it resolve any potential discrepancies in the method of calculation.

Who May Find This Useful

This discussion may be useful for students and researchers involved in materials science, particularly those working with perovskite materials and stoichiometric calculations.

paramahamsa
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hello forum
I am working on NKBT Perovskite material.My formula is (Na0.5 K0.5)0.5 (Bi)0.5 TiO3
I am using NaNo3,KNO3,Bi(NO3)3.5H2O,TiO2 powders
my question is how much powder in grams I have to take according to stichometry.
Do I have to work in wt% or in Mole %.
is there any difference?
I am using this method
NaNO3 in Grms = molecular wt of NaNO3*no.of moles of NaNO3*5(i want to make 5 grms of total sample)/total molecular weight of compound.
Is this correct?
please reply.
actuall I am a physics major.
 
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To prepare the mix you have to convert everything to grams, there is no other reasonable way to measure amount of the solid than to weight it.

Calculate molar ratio first, then convert it to weight ratio using molar masses of the compounds used.
 
thank you for reply
so is my method is correct? or wrong?
can I proceed in the same way?
 
paramahamsa said:
NaNO3 in Grms = molecular wt of NaNO3*no.of moles of NaNO3*5(i want to make 5 grms of total sample)/total molecular weight of compound.

Looks OK to me.
 

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