Excess aquesus potasium iodide is added to chlorine. (i) Write a chemical equation for the reaction that occurs when aquesus potasium is added to chlorine. [2] (ii) State the final colour of the reaction mixture. [3] 相关知识点: 试题来源: 解析(i) 2KI + Cl2 → 2KCl + I2 (ii)...
Chlorinated organic compounds (COCs) are common anthropogenic contaminants encountered in soil and groundwater. COCs were industrially produced for different applications, such as dry cleaning, degreasing, or as pesticides. The presence of COCs in the en
always written in the left-hand side of the equation as symbols. These symbols can represent individual atoms, elements, or even compounds. The symbols used are not random; they come from the periodic table. Each element has its own Latin symbol, e.g., Sodium Na, Chlorine Cl and so on...
In a chemical equation, the reactants are written on the left side, while the products are written on the right side of the arrow. The coefficients of the formulae indicate the moles of a substance produced or utilised during the reaction. Chemical equations also include the physical state o...
Calculate the net ionic equation for Cl(g) + HI(aq) = I(s) + HCl(aq). Redox (Oxidation-Reduction) Reaction Cl + HI = I + HCl might be a redox reaction. Reactants Chlorine - Cl Element 17 Cl Molar Mass Cl Oxidation Number Hydrogen Iodide - HI Hi Hydroiodic Acid HI Molar ...
Write a balanced equation for the reaction of chlorine atoms, fluorine atoms, and hydrogen atoms. Balance the equation Al(OH)_3 \to Al_2O_3 + H_2O Balance the following equation: Al(OH)_3 to Al_2O_3 + H_2O. Balance the following chemical reaction equation: MnO...
balance the equation to show that the Law of Conservation of Mass is observed during the reaction. In our example you can see that the two atoms of hydrogen and the two atoms of chlorine in the chemical units of the products must have come from two chemical units of the reactant, hydroch...
Anempirical formula consists of symbols representingelementsin acompound, such as Na forsodiumand Cl forchlorine, and subscripts indicating the relative number ofatomsof eachconstituentelement. (A subscript is not used, however, unless the number is more than one.) Thus,benzeneis represented by the...
化学反应方程-有机(Chemical reaction equation organic) Methane combustion CH4+2O2 - CO2+2H2O (condition for lighting) Methane is isolated from air by high temperature decomposition The decomposition of methane is very complex, and the following is the final decomposition. CH4 - C+2H2 (condition ...
Just as general equation, there are two atoms of sodium (1 Na2 = 1•2 = 2) and two atoms of chlorine (1 Cl2 = 1•2 = 2) which reacts with each other to form 2 molecules of NaCl (2 NaCl:2Na = 2•1 = 2, 2 C1 = 2•1=2)...