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इन अभिक्रियाओं के लिए समीकरण लिखे - (i) भाप के साथ आयरन (ii) जल के साथ कैल्सियम तथा पोटैशियम

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इन अभिक्रियाओं के लिए समीकरण लिखे -
(i) भाप के साथ आयरन
(ii) जल के साथ कैल्सियम तथा पोटैशियम
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(i) `3Fe(s)+4H_(2)O_(g)hArr Fe_(3)O_(4)(s)+4H_(2)(g)`
`(ii) Ca(s)+2HO(l)+rarrCa(OH)_(2)(aq)+H_(2)(g)`
`2K(s)+2H_(2)O(l)rarr 2KOH(aq)+H_(2)(g)`
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