4 g in 1 liter will give you a 4000 ppm solution.
no
Two methods To a gas jar of chlorine gas add a very small pellet of potassium . 'Flash/bang' and the white powder is KCl(Potassium Chloride). 2K(s) + Cl2(g) = 2KCl(s) This method is NOT recommended unless under very controlled lab. conditions (fume cupboard and lab. technician available). To a solution of potassium hydroxide and a molar equation of hydrochloric acid. They neutralise to form a solution of potassium chloride. Whereupon evaporate the solution(water) to leave white crystals of potassium chloride. KOH(aq) + HCl(aq) = KCl(aq) + H2O(l) This is a safer, longer method of making potassium chloride.
White powder like table salt
To prepare zinc chloride powder from an aqueous solution, you can first evaporate the water by heating the solution. This will leave behind the solid zinc chloride. Make sure to perform this step in a well-ventilated area as zinc chloride can release fumes. Collect the dried zinc chloride crystals for use as a powder.
To make a potassium thiocyanate solution, first dissolve potassium thiocyanate powder in distilled water. Stir the mixture until the powder is completely dissolved. The resulting solution can be used for various chemical reactions or experiments.
To make a potassium thiocyanate solution, simply dissolve potassium thiocyanate powder in distilled water until the desired concentration is achieved. Stir the solution until the powder is completely dissolved. Take proper safety precautions as potassium thiocyanate can be harmful if mishandled.
copper+nitric acid > copper nitrate+hydrogen copper+sulpuric acid> copper sulphate+ hydrogen copper+potassium chloride> copper chloride+ hydrogen copper+ zinc carbonate (powder metal) > copper+ zinc + water + carbon dioxide zinc+nitric acid > zinc nitrate+ hydrogen etc just replace the copper in the above equations with 'zinc' for all the zinc solutions x
Because hydrochloric acid is a clear solution and potassium is a solid white powder the observation would be: a colourless, clear solution is add to a solid white powder which formed a solution and produced orderless, colourless gas. equation: 2H+(aq) +K2CO3(s) ---> 2K+(aq)+ CO2(g)+ H2O(l) NOTE: observations are what you actually see, therefore you would not be able to tell is the colourless gas was carbon dioxide or that water was present in the solution.
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To prepare a 50% potassium carbonate solution, you would mix equal parts of potassium carbonate powder with water. For example, to make 100mL of 50% solution, you would mix 50g of potassium carbonate with 50mL of water. Stir until the powder is fully dissolved to achieve the desired concentration.
There is a good method posted on: http://www.skepticfiles.org/new/003doc.htm (just read up to "Powder these to the consistency of face powder, and heat gently to drive off all moisture.") This basically describes taking bleach heating it, adding potassium chloride (easy-to-buy salt substitute), cooling the solution, and filtering it. Heating the bleach causes the NaClO (sodium hypochlorite) to decompose into NaCl (table salt) and NaClO3 (sodium chlorate). Upon the addition of the KCl (potassium chloride), the NaClO3 and KCl undergo and double displacement reaction creating the KClO3. 3NaClO ---> 2NaCl + NaClO3 NaClO3 + KCl ---> KClO3 + NaCl The method was easy and successful for me, but if worst comes to worst, do a Google search and it will point you in the right direction. Disclaimer: This is for educational purposes and this answer is not liable for any damages to you, due to attempting this process.
To prepare cupric chloride solution, dissolve copper chloride powder in water by stirring until fully dissolved. The concentration of the solution can be adjusted by changing the amount of copper chloride powder used relative to the volume of water. Always wear appropriate personal protective equipment and handle the chemical in a well-ventilated area.