A water contains the following dissolved ions.[Na+]=56mg/L;[Ca2+]=40mg – InterviewSolution

1.	A water contains the following dissolved ions.[Na+]=56mg/L;[Ca2+]=40mg/L;[Mg2+]=30mg/L;[Al3+]=3mg/L;[HCO−3]=190mg/L;[Cl−]=165mg/L;Water pH is 7.Atomic weights:Ca=40,Mg=24,Al=27,H=1,C=12,O=16,Na=23,Cl=35.5The total hardness of the sample in mg/L as CaCO3 is
Answer» A water contains the following dissolved ions. $[N a^{+}] = 56 m g / L; [C a^{2 +}] = 40 m g / L;$ $[M g^{2 +}] = 30 m g / L; [A l^{3 +}] = 3 m g / L;$ $[H C O_{3}^{-}] = 190 m g / L; [C l^{-}] = 165 m g / L;$ Water pH is 7. Atomic weights: $C a = 40, M g = 24, A l = 27, H = 1, C = 12, O = 16, N a = 23, C l = 35.5$ The total hardness of the sample in mg/L as $C a C O_{3}$ is

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