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What mass of CaO will be required to rem...

What mass of CaO will be required to remove the hardness of 1000 litres of water containing 1.62g of `Ca(HCO_3)_2` per litre?

Text Solution

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`underset("162 g")(Ca(HCO_(3))_(2))+underset("56g")(CaO) to 2CaCO_(3)+H_(2)O+CO_(2)`
`5.6 xx 10^(2)g" be cause solution has 1620 g"Ca(HCO_(3))_(2)`.
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