A metal which does not react with cold water but reacts with steam to liberate H2 gas is (A) Na (B) Mg (C) Au (D) Fe. Support your answer with equally balanced chemical equations. 3Fe + 4H 2 O → Fe 3 O 4 + 4H 2. These metals react with cold water with increasing vigor to give the metal hydroxide and hydrogen. MEDIUM. However, the metals that react SLOWLY with cold water are the metals from Group-IIA(Magnesium, Calcium, etc). Name the three metals which react with cold water to form hydrogen gas. The alkali metals (Li, Na, K, Rb, Cs, and Fr) are the most reactive metals in the periodic table - they all react vigorously or even explosively with cold water, resulting in the displacement of hydrogen.. Observations: 1. 2. [D]. The Group 1 metal (M) is oxidised to its metal ions, and water is reduced to hydrogen gas (H 2) and hydroxide ion (OH −), giving a general equation of: Calcium, for example, reacts fairly vigorously and exothermically with cold water. It uses these reactions to explore the trend in reactivity in Group 1. Reaction of aluminium metal with water: Reaction of aluminium metal with cold water is too slow to come into notice. The Facts. Answer. Na + 2 H 2 O ———-> 2NaOH + H 2 . Which metals do not react with cold as well as hot water ... Na, Ca and Mg are reactive metals and quickly react with water. 3. All metals, if they do react with water at all, react faster in steam than in water. N a, K, R b reacts readily with water to form hydrogen gas & corresponding hydroxide. Check Answer and Solution for ab At room temperature, the reaction of Fe is very slow but red hot iron reacts with steam to form Fe 3 O 4 with hydrogen gas. Of the three metals X, Y and Z. X reacts with cold water, Y with hot water and Z with steam only. Metal starts moving over the surface of water making a hissing sound. She is writing some statements about “metals and non-metals” but she confused to … Strontium and barium have reactivities similar to that of lithium. Identify X, Y and Z and also arrange them in order of - 1624077 General. None of the above View Answer; Q6 Pratibha is taking preparation for her final examination. 2)Magnesium is less reactive metal so it react slowly with cold water,it reacts rapidly only with hot boiling water. Metal starts reacting with water causing little explosions. If the gas evolved burns with a 'pop' sound, it indicates that it is hydrogen gas. Calcium and the metals that are more reactive than calcium in the reactivity series can react with cold water to form the corresponding hydroxide while liberating hydrogen gas. 1)Sodium is a very reactive metal,therefore sodium metal react violently even with cold water. Sodium and potassium metals react violently with cold water. Soon the metal catches fire and starts burning. 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