In carbonate hardness cations are
Question
In carbonate hardness cations are
Solution
In carbonate hardness, the cations are usually calcium (Ca2+) and magnesium (Mg2+). These are the two most common cations associated with hardness in water, and they become problematic when they react with carbonate (CO3 2-) and bicarbonate (HCO3 -) anions to form insoluble compounds. These compounds can cause scale build-up in pipes and boilers, and can also interfere with the cleaning action of soap and detergents.
Similar Questions
In carbonate hardness cations are ans. Mg2+ Ca2+ Both Ca2+ & Mg2+ Na+
Name a carbonate that is soluble in water.
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Example 1: Calculate the hardness of water sample having following analysis : Mg(HCO3)2 = 7.3ppm, Ca(HCO3)2 = 16.2 ppm, MgCl2 = 9.5 ppm, CaSO4 = 13.6 ppm, Fe2O3 = 8.5 ppm, Mg(NO3)2=14.8 ppm. Also calculate carbonate and non carbonate hardnes
Some carbonate compounds have limited solubility.MCO3(s) ⇋ M2+(aq) + CO32-(aq)The solubility constant Ksp for a carbonate compound MCO3, Ksp = 7.2E-7.A saturated solution of the compound MCO3, is made.Calculate the concentration of the ions M2+(aq) and CO32-(aq) in the saturated solution (check the stoichiometry, the ions will have the same concentration).Give your answer to three significant figures, using the exponential format, for example enter 0.0000382 as 3.82e-5 with no gaps and the -ve e if power is -ve.
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