Our tips from experts and exam survivors will help you through. It fizzes steadily and becomes smaller, until it eventually disappears. The speed and violence of the reaction increases as you go down the group. In each reaction, is produced. This shows that the reactivity of the alkali metals increases as you go down Group 1. Formula Equation: 2 Li (s) + 2 H2O (l) → 2 LiOH (aq) + H2 (g) Ionic Equation: 2 Li (s) + 2 H2O (l) → 2 Li+ (aq) + 2 OH- (aq) + H2 (g) They include lithium, sodium and potassium, which all react vigorously with water to produce an alkaline solution. It fizzes rapidly, and the hydrogen produced may burn with an orange flame before the sodium disappears. Strong alkalis are corrosive. Lithium + Water → Lithium hydroxide + Hydrogen. lithium + water → lithium hydroxide + hydrogen; 2Li(s) + 2H 2 O(l) → 2LiOH(aq) + H 2 (g) Lithium + Water = Lithium Hydroxide + Hydrogen The equation is: 2Li + 2H2O = 2LiOH + H2. Equation:- 2Li + H2O = Li2O + H2 Uncoated lithium metal reacts with water to form a colorless lithium hydroxide solution and hydrogen gas. When sodium is added to water, the sodium melts to form a ball that moves around on the surface. Lithium + Water = Lithium Hydroxide + Dihydrogen; Li + H2O + ClLiO4 = HLiO + Cl2; Li + H2O + CO2 = LiHCO3 + H2; Li + H2O + LiClO3 = LiOH + Cl2; Li + H2O + LiClO4 = LiOH + Cl; Li + H2O + LiClO4 = LiOH + Cl2; Li + H2O + O2 = LiOH; Li + H2O = H + Li2O; Li + H2O = H + LiO; Zn + CuSO4 = ZnSO4 + Cu2; Pb(NO3)2 + NaOH = Pb(OH)2 + NaNO3; CH3(CH2)2OH + O2 = CO2 + H2O The reaction is both spontaneous and exothermic, but the amount of heat produced is lower than other metals in group 1A. Read about our approach to external linking. This shows that the reactivity of the alkali metals increases as you go down Group 1. lithium + water → lithium hydroxide + hydrogen, sodium + water → sodium hydroxide + hydrogen, potassium + water → potassium hydroxide + hydrogen, The hydroxides formed in all of these reactions dissolve in water to form. In each reaction, hydrogen gas is given off and the metal hydroxide is produced. All the alkali metals react vigorously with cold water. Care must be taken when they are used - goggles and gloves should be worn. The Group 1 elements in the periodic table are known as the alkali metals. All the alkali metals react vigorously with cold water. It moves around very quickly on the surface of the water. The resulting solution is basic because of the resulting hydroxide ions. The speed and violence of the reaction. The hydrogen ignites instantly. When lithium is added to water, lithium floats. These solutions turn universal indicator purple, showing they are strongly alkaline. When potassium is added to water, the metal melts and floats. Home Economics: Food and Nutrition (CCEA). The hydroxides formed in all of these reactions dissolve in water to form alkaline solutions. Lithium + Water = Lithium Hydroxide + Hydrogen The equation is: 2Li + 2H2O = 2LiOH + H2 Care must be taken when they are used - goggles and gloves should be worn. Sign in, choose your GCSE subjects and see content that's tailored for you. There is sometimes a small explosion at the end of the reaction. The metal is also set on fire, with sparks and a lilac flame. as you go down the group. .