what is the missing coefficient to make a balanced equation? ?na + cl₂ → nacl. be sure the equation is…
what is the missing coefficient to make a balanced equation? ?na + cl₂ → nacl. be sure the equation is balanced before entering the coefficients. 4 1 2 7
Answer
Explanation:
Step1: Balance chlorine atoms
On the left - hand side, we have $Cl_2$ which has 2 chlorine atoms. On the right - hand side, in $NaCl$ there is 1 chlorine atom per formula unit. So, to balance the chlorine atoms, the coefficient of $NaCl$ must be 2: $Na+Cl_2\rightarrow2NaCl$.
Step2: Balance sodium atoms
Now, on the right - hand side, we have 2 sodium atoms in $2NaCl$. So, the coefficient of $Na$ on the left - hand side must be 2. The balanced equation is $2Na + Cl_2\rightarrow2NaCl$.
Answer:
2