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
Right Noh, let's go. a) (i) Alkanes contain only single bonds between carbon atoms and between carbon and hydrogen atoms. These are covalent bonds. (ii) Ethane has the chemical formula C_2H_6. Its displayed formula shows all atoms and bonds. cc H & H \\ | & | \\ H - C - C - H \\ | & | \\ H & H (iii) Alkanes are unreactive except in terms of combustion and substitution by halogens. (iv) To complete the symbol equation for the complete combustion of methane (CH_4), we need to balance the atoms on both sides. Complete combustion of a hydrocarbon produces carbon dioxide (CO_2) and water (H_2O). Step 1: Write the unbalanced equation with the known products. CH_4 + ....O_2 → ....CO_2 + 2H_2O Step 2: Balance carbon atoms. There is 1 carbon atom on the left (CH_4), so there must be 1 carbon atom on the right. CH_4 + ....O_2 → 1CO_2 + 2H_2O Step 3: Balance hydrogen atoms. There are 4 hydrogen atoms on the left (CH_4). On the right, 2H_2O means 2 × 2 = 4 hydrogen atoms. Hydrogen is already balanced. Step 4: Balance oxygen atoms. On the right side, there are 2 oxygen atoms from CO_2 and 2 × 1 = 2 oxygen atoms from 2H_2O, totaling 2 + 2 = 4 oxygen atoms. Therefore, there must be 4 oxygen atoms on the left. Since oxygen is in the form of O_2, we need 4/2 = 2 molecules of O_2. CH_4 + 2O_2 → CO_2 + 2H_2O The completed equation is: CH_4 + 2O_2 → CO_2 + 2H_2O Send me the next one 📸