A certain metal will liberate hydrogen from dilute acids. It will react with to from hydrogen only when the metal is heated and water is in the from o
A certain metal will liberate hydrogen from dilute acids. It will react with to from hydrogen only when the metal is heated and water is in the from of steam . The metal is probably
A. iron
B. Potassium manganate
C. copper
D. mercury
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Correct Answer - A
`Fe+underset(dil)(H_(2)SO_(4))rarrFeSO_(4)+H_(2)uarr`
`underset("hot")(3Fe)+underset ("steam")(4H_(2)O)rarr4H_(2)uarr+Fe_(3)O_(4)`
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