One of the most fundamental concepts that you need to learn in chemistry is how to write a chemical equation. Chemical equations are used whenever a compound is formed or decomposed. This is why learning how to write them is so crucial since most of chemistry is based around the formation a...
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)...
Chemical reaction:This word equation requires knowledge of some important formulas in chemistry. Hydrochloric acid is a strong acid which is used frequently in labs. The equation mentions the word "yields" which helps us realize that the compounds ...
Word Equation:A chemical equation requires the chemical formula of the reactants and products while a word equation is constructed by using the chemical name of the reactants and products. Therefore, to construct the word equation, it is important to know the correct chemical...
题目 (i) Write the chemical equation for the reaction that occurs when magnesium burns in oxygen.[2] 相关知识点: 试题来源: 解析\[2Mg + O_2 \rightarrow 2MgO\] 镁在氧气中燃烧会发生化学反应,生成氧化镁。反应的化学方程式为: 2Mg + O₂ → 2MgO...
Step 2: Write the Unbalanced Chemical Equation The unbalanced chemical equation can be written as: Na2SO3(s)+H2SO4(aq)→Na2SO4(aq)+H2O(l)+SO2(g) Step 3: Count the Atoms on Both Sides -Reactants: - Sodium (Na): 2 - Sulfur (S): 2 (1 from Na₂SO₃ and 1 from H₂SO...
Write chemical equation to illustrate Hell-Volhard-Zelinsky reaction. View Solution Write the chemical equations to illustrate the following name reactions: Rosenumnd's reaction. View Solution Write chemical equations to illustrate eac of the following reactions ...
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...
The conservation of mass is a law of the universe. Matter can't be created from nothing and it can't be eliminated from existence. The law of the conservation of mass is fulfilled in a chemical equation by balancing it with co...
Write the net ionic equation for the reaction that occurs when aqueous solutions of sodium hydroxide and potassium nitrate are combined. Write the net ionic equation and include the state of the chemical. CuO (s) + HCl (aq) Write the net ionic equation and include the sta...