Answer: 6Fe + 6HCl → 3FeCl3 + 3H2
Step-by-step explanation:
The equation for the reaction is: 6Fe + 6HCl → 3FeCl3 + 3H2
The relative atomic mass of iron is 55.85. To calculate the amount of hydrogen chloride, we need to first calculate the moles of iron that is reacting. This can be done by dividing the mass of iron (6.16 g) by its molar mass (55.85 g/mol). This gives us 0.11 mol of iron.
Since the reaction is a 1:1 ratio, we know that the same amount of moles of hydrogen chloride will be needed. Thus, 0.11 mol of hydrogen chloride is needed. To calculate the mass of hydrogen chloride, we need to multiply the moles of hydrogen chloride (0.11 mol) by its molar mass (36.45 g/mol). This gives us 4.01 g of hydrogen chloride.
Therefore, the relative atomic mass of iron is 55.85 and the mass of hydrogen chloride needed for the reaction is 4.01 g.