This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
A displacement reaction occurs when a more reactive element displaces a less reactive element from its compound. Let's analyze each equation: A. 2Al(s) + 3I_2(s) → 2AlI_3(s) This is a combination reaction, where two elements combine to form a single compound. B. CuCO_3(s) → CuO(s) + CO_2(g) This is a decomposition reaction, where a single compound breaks down into two simpler substances. C. 2NaCl(l) → 2Na(l) + Cl_2(g) This is a decomposition reaction, where a compound breaks down into its constituent elements. D. Fe(s) + CuSO_4(aq) → FeSO_4(aq) + Cu(s) In this reaction, elemental iron (Fe) displaces copper (Cu) from copper(II) sulfate (CuSO_4) to form iron(II) sulfate (FeSO_4) and elemental copper (Cu). This is a single displacement reaction because iron is more reactive than copper. The final answer is D. That's 2 down. 3 left today — send the next one.