This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Step 1: Write the unbalanced chemical equation based on the given information. The reactants are 2 molecules of ethylene (C_2H_4) and 1 molecule of oxygen (O_2). The product is acetaldehyde (C_2H_4O). 2C_2H_4 + O_2 → C_2H_4O Step 2: Count the number of atoms of each element in the reactants. • For Carbon (C): In 2C_2H_4, there are 2 × 2 = 4 carbon atoms. • For Hydrogen (H): In 2C_2H_4, there are 2 × 4 = 8 hydrogen atoms. • For Oxygen (O): In O_2, there are 1 × 2 = 2 oxygen atoms. Step 3: Count the number of atoms of each element in the products. According to the law of conservation of atoms, the number of atoms of each element must be the same on both sides of the equation. Let x be the stoichiometric coefficient for acetaldehyde. 2C_2H_4 + O_2 → xC_2H_4O • For Carbon (C): Reactants have 4 C atoms. In xC_2H_4O, there are x × 2 carbon atoms. So, 2x = 4 x = 2. • For Hydrogen (H): Reactants have 8 H atoms. In xC_2H_4O, there are x × 4 hydrogen atoms. So, 4x = 8 x = 2. • For Oxygen (O): Reactants have 2 O atoms. In xC_2H_4O, there are x × 1 oxygen atoms. So, 1x = 2 x = 2. Since x=2 for all elements, the balanced equation is: 2C_2H_4 + O_2 → 2C_2H_4O Now, count the atoms in the products with x=2: • For Carbon (C): In 2C_2H_4O, there are 2 × 2 = 4 carbon atoms. • For Hydrogen (H): In 2C_2H_4O, there are 2 × 4 = 8 hydrogen atoms. • For Oxygen (O): In 2C_2H_4O, there are 2 × 1 = 2 oxygen atoms. Step 4: Fill in the table. | Chemical element | Number of atoms in reactants | Number of atoms in products | | :--------------- | :--------------------------- | :-------------------------- | | Carbon (C) | 4 | 4 | | Hydrogen (H) | 8 | 8 | | Oxygen (O) | 2 | 2 | What's next? 📸