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Joined 1 year ago
Cake day: June 15th, 2023
  • user134450@feddit.detoCoffee@lemmy.world•Descaling liquidEnglish
    2·
    8 months ago

    If you want to be super exact about it it would be roughly 4 times the mass of limescale + mass of already dissolved CaCO3 in your tap water (you can look that up if you know the hardness index of your water).

    But really just don’t be stingy with citric acid and it will be fine is what i am saying.

    Here is the math:

    Spoiler

    2 frac {210.14 g/mol } {100.0869 g/mol} approx 4.2

    <math xmlns=“http://www.w3.org/1998/Math/MathML” display=“block”> <semantics> <mrow> <mn>2</mn> <mrow> <mfrac> <mrow> <mn>210.14</mn> <mrow> <mi>g</mi> <mo stretchy=“false”>/</mo> <mi mathvariant=“italic”>mol</mi> </mrow> </mrow> <mrow> <mn>100.0869</mn> <mrow> <mi>g</mi> <mo stretchy=“false”>/</mo> <mi mathvariant=“italic”>mol</mi> </mrow> </mrow> </mfrac> <mo stretchy=“false”>≈</mo> <mn>4.2</mn> </mrow> </mrow> <annotation encoding=“StarMath 5.0”>2 frac {210.14 g/mol } {100.0869 g/mol} approx 4.2</annotation> </semantics> </math>

  • user134450@feddit.detoCoffee@lemmy.world•Descaling liquidEnglish
    7·
    8 months ago

    Note that citric acid works a bit more nuanced than many other descalers: it acts as a chelating agent at high concentrations (2x the Ca2+ concentration) and is more effective at removing scale because of this effect, but at lower concentrations the effect might actually be reversed because it can form solid calcium citrate, which has a very low solubility in water.

    If you are using citric acid based descaler you should make sure that you are always using enough of it to avoid the formation of calcium citrate.