Why hydrogen is not prepared by the action of calcium and dil. H2so4
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Calcium and sulfuric acid certainly DO give off hydrogen gas:
Ca + H2SO4 = CaSO4 + H2(g)
ΔG(20C) = -631.5kJ (negative, so the reaction runs)
ΔH(20C) = -619.9kJ (negative, so the reaction... is exothermic – very exothermic!)
......hope it is ......right.... ..
Ca + H2SO4 = CaSO4 + H2(g)
ΔG(20C) = -631.5kJ (negative, so the reaction runs)
ΔH(20C) = -619.9kJ (negative, so the reaction... is exothermic – very exothermic!)
......hope it is ......right.... ..
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