preparation

  1. S

    LaF preparation

    can anyone help and suggest me how to prepare lanthanum fluoride (LaF) by writing a reactions for it?
  2. verlynchin

    Urgent!!! Preparation of graphite solution

    I AM HAVING PROBLEM IN PREPARATION OF GRAPHITE SOLUTION AFTER READ THE JOURNAL. CAN SOMEONE HELP ME? THE JOURNAL EXPERIMENTAL METHODS IS WROTE IN THIS WAY: Sodium cholate (NaC) was purchased from Sigma Aldrich and was dissolved in Millipore water at various concnetrations between 0.01 and...
  3. O

    preparation of standard EDTA

    How can I prepare 0.01m of EDTA solution from EDTA powder?
  4. T

    Help with Solution Preparation!

    How many mL of HCl would I need to dilute in a 0.2% sodium bicarbonate solution to create a 100mL solution with a pH of 3? of 5? How many mL of NaOH would I need to dilute in a 0.2% sodium bicarbonate solution to create a 100mL solution with a pH of 9? of 11? Thanks so much!
  5. A

    Question about the preparation of a methylene blue solution

    Hello, I have to prepare a methylene blue solution, with 5% acetic acid. I'll use it to measure how much MB is adsorbed by activated carbon. My question is: what's the acetic acid for? why not dissolve the methylene blue in just distilled water? Thanks.
  6. T

    Preparation of salts by titration

    Which of the following salts can be prepared by an acid-alkali titration method. A) aluminium sulfate B) ammonium sulfate C) copper(ii) sulfate D) iron(ii) sulfate I have no idea how to start.... Do I have to look at the solubility of each? Or what?