carbonate

  1. B

    Magnesium Carbonate and Potassium Borohydride Purity Tests

    Hi guys, I'm having problems finding a purity test method I can carry out on Mag Carb and Pot Borohydride. Any help would be great!
  2. T

    Sodium Clorite plus Sodium Carbonate

    I need to ask about the reaction between Sodium Carbonate (NaCO3) and Sodium Chlorite (NaClO2). It's said that this reaction will generate Chlorine dioxide (ClO2). However, when i mix these 2, a precipitate appears. I don't know what compound is formed because both reagents and products...
  3. J

    Carbonate equilibriums

    I'm stuck on the last part of an experiment regarding carbonate equilibriums. First, carbon dioxide gas was bubbled through Ca(OH)2. This produced a cloudy liquid, and then when the gas continued to bubble through, the liquid turned clear again. I'm fine with this part: Ca(OH)2(aq) + CO2(g)...
  4. M

    Thermal decomposition of calcium carbonate.

    In general, we heat CaCO3 to temperature of approximately 825°C it decomposes into calcium oxide and liberates carbon dioxide gas:* CaCO3 →825°C→ CaO + CO2* Is it possible to heat the calcium carbonate at temperatures below 825 degrees Celsius.
  5. M

    What is the reaction mechanism for the formation of copper (II) carbonate (verdigris

    What is the reaction mechanism for the formation of copper (II) carbonate (verdigris patina) from copper, water, carbon dioxide, and oxygen? Anyone know the exact mechanism to this reaction? Does the water attack the carbon dioxide first, forming bicarbonate?
  6. B

    Calculate the percent Lithium cabonate by mass in the carbonate solution?

    A quantity of 25.0 mL of 6.0 M HCL solution is added to a 11.50g sample of an aqueous solution of lithium cabonate. The carbon dioxide gas that is generated is collected over water at 20.0 celsius and an atmospheric pressure of 725 torr. When the gas levels are equalized, the volume of the gas...
  7. T

    Copper Carbonate Observation

    I am a 3rd year chemistry student and I came across an interesting phenomenon, when you add 20 mL of 10M HCl to 10 mL of 0.30M CuSO4, you of corse get the bright yellow CuCl4 anion. If you add excess dissolved sodium carbonate (60 mL of 2M), instead of coming out of solution, it forms a deep...
  8. A

    calcium carbonate chemistry

    I am trying to calculate the resulting pH of a water that has a known alkalinity (say 350 ppm), hardness content (300 ppm) and pH of 7.5 after adding acidified water of pH=2.2. This acidified water is water that has passed through an strong cation ion exchange resin of the H+ form. Around 0.4...