QuestionMay 15, 2025

5. Balance the following equations by adding the correct coefficients. a. Na+Cl_(2)arrow NaCl b. Mg+N_(2)arrow Mg_(3)N_(2)

5. Balance the following equations by adding the correct coefficients. a. Na+Cl_(2)arrow NaCl b. Mg+N_(2)arrow Mg_(3)N_(2)
5. Balance the following equations by adding the correct coefficients. a. Na+Cl_(2)arrow NaCl b. Mg+N_(2)arrow Mg_(3)N_(2)

Solution
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Answer

a. 2Na + Cl_{2} \rightarrow 2NaCl ### b. 3Mg + N_{2} \rightarrow Mg_{3}N_{2} Explanation 1. Balance equation a Sodium (Na) and chlorine gas (Cl_2) react to form sodium chloride (NaCl). Each Cl_2 molecule provides 2 Cl atoms, so we need 2 Na atoms. The balanced equation is: 2Na + Cl_{2} \rightarrow 2NaCl. 2. Balance equation b Magnesium (Mg) reacts with nitrogen gas (N_2) to form magnesium nitride (Mg_3N_2). We need 3 Mg atoms for every 2 N atoms. The balanced equation is: 3Mg + N_{2} \rightarrow Mg_{3}N_{2}.

Explanation

1. Balance equation a<br /> Sodium (Na) and chlorine gas ($Cl_2$) react to form sodium chloride (NaCl). Each $Cl_2$ molecule provides 2 Cl atoms, so we need 2 Na atoms. The balanced equation is: $2Na + Cl_{2} \rightarrow 2NaCl$.<br /><br />2. Balance equation b<br /> Magnesium (Mg) reacts with nitrogen gas ($N_2$) to form magnesium nitride ($Mg_3N_2$). We need 3 Mg atoms for every 2 N atoms. The balanced equation is: $3Mg + N_{2} \rightarrow Mg_{3}N_{2}$.
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