Explaining the trend in reactivity. The reaction is so fast that if the reaction is carried out in a glass vessel, the glass container will shatter. Lithium just sizzles on top of the water (see Table 1 for densities). Caesium (cesium in USA) metal reacts rapidly with water to form a colourless solution of caesium hydroxide (CsOH) and hydrogen gas (H2). A base is a metallic hydroxide. At least that's what they said. "Water pills" can also decrease potassium in the body. 2Cs + 2H 2 O → 2CsOH + H 2 [ Check the balance ] Cesium react with water to produce cesium hydroxide and hydrogen. The most reactive metal, cesium, reacts with water to produce an explosive gas and a base. One pseudo-science programme on TV showed the reaction between water and the different group one alkali metals, namely lithium, sodium, potassium, rubidium and caesium. Water pills (Diuretic drugs) interacts with CESIUM Large amounts of cesium can decrease potassium levels in the body. Picture of reaction: Edited for clarity in what I meant: Perhaps the amount of cesium used in the gif is much smaller than that seen in the video, assuming similar volumes of water are used. Also, the hydrated radius of lithium is the greatest out of all alkali metals. Or perhaps the metal in the gif isn't pure cesium (but then other metals similar to cesium would still provide violent results). the formula for water is simply H2O (two hydrogens, one oxygen). Water: H2O. The formula for cesium is Cs, it is a simple element. Balance it: 2Cs + 2 H2O --> 2CsOH + H2. Caesium: Cs - metal. Rubidium hydroxide (RbOH) solution and hydrogen gas are formed as results. Thermodynamic properties of substances The solubility of the substances Periodic table of elements. Cesium react with water. - Duration: 0:24. Caesium. Caesium hydroxide and hydrogen are formed. Looking at the enthalpy changes for the reactions Find another reaction. The answer to “Elemental cesium reacts more violently with water than does elemental sodium. The molten metal spreads over the water and exposes a larger surface to water. Summary of the trend in reactivity. The resulting solution is basic because of the dissolved hydroxide. The heat of reaction is sufficient to melt it. This reduces the ionic mobility which in turn reduces the speed of the molten metal. Hope this helps! Our channel. Caesium explodes on contact with water, quite possibly shattering the container. Rule: metal + water --> alkaline solution + H2: Cs + H2O --> CsOH + H2. 1,422 points • 278 comments - Cesium reacts with water - IWSMT has amazing images, videos and anectodes to waste your time on The reaction is very exothermic. Actually, they faked the reaction of rubidium and caesium with water since they thought they were not spectacular enough for TV. In each reaction, hydrogen gas is given off and the metal hydroxide is produced. 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