The hardness of a water sample containing $10^{- 3}$ M $MgS O_{4}$ expressed as $CaC O_{3}$ equivalents(in $ppm$ is)…..
(molar mass of $MgS O_{4}$ is 120.37 g/mol)

Question

The hardness of a water sample containing 10^-3 M MgSO_4 expressed as CaCO_3equivalents(in ppm is)….. (molar mass of MgSO_4 is 120.37 g/mol)

Accepted Answer

Correct answer: 100. 100 JEE Main 2020 10^-3 Molar MgSO_4 ≡10^-3 moles of MgSO_4 present in 1L solutions. n_ CaCO_3 ≡n_ MgSO_4 ppm_i (n term of CaCO_3 )= 10^-3 1001000 10^6 ppm_i (n term of CaCO_3 )=100 ppm

$The hardness of a water sample containing 10^{- 3} M MgS O_{4} expressed as CaC O_{3} equivalents(in ppm is)\dots.. (molar mass of MgS O_{4} is 120.37 g/mol)$

Solution

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