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The metal M reacts vigorously with water to form a solution S and a gas G. The solution S turns red litmus to blue whereas gas G, which is lighter than air, burns with a pop sound. Metal M has a low melting point and it is used as a coolant in nuclear reactors. (a) What is metal M? (b) What is solution S? Is it acidic or alkaline ? (c) What is gas G? (d) Write a balanced chemical equation for the reaction which takes place when metal M reacts with water. (e) Is this reaction exothermic or endothermic? |
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Answer» (a) Sodium, Na. (b) Sodium hydroxide solution (NaOH solution), Alkaline. (c) Hydrogen, H2 (d) 2Na + 2H2O —–> 2NaOH + H2 (e) Exothermic. |
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