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One mole of an unknown compound was trea...

One mole of an unknown compound was treated with excess water and resulted in the evolution of two moles of a readily combustible gas. The resulting solution was treated with `CO_(2)` and resulted in the formation of white turbidity. The unknown compound is

A

Ca

B

`CaH_(2)`

C

`Ca(OH)_(2)`

D

`Ca(NO_(3))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`CaH_(2)+2H_(2)OrarrCa(OH)_(2)+2H_(2)`
`Ca(OH)_(2)+CO_(2)rarrCaCO_(3)+H_(2)O`
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