Multiple Choice
What is the sum of the coefficients in the balanced equation for the reaction of Mn^{2+} with NaOH to form Mn(OH)_2?
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3. Chemical Reactions
Balancing Chemical Equations
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In the balanced chemical equation 2Al + 6HCl → 2AlCl3 + 3H2, how many chlorine atoms are present on the products side?
A
6
B
3
C
2
D
6
Verified step by step guidance1
Identify the chemical species on the products side of the balanced equation: \$2AlCl_3\( and \)3H_2$.
Focus on the compound containing chlorine atoms, which is aluminum chloride, \(AlCl_3\).
Note that each formula unit of \(AlCl_3\) contains 3 chlorine atoms.
Since there are 2 formula units of \(AlCl_3\) (as indicated by the coefficient 2), multiply the number of chlorine atoms per unit by the coefficient: \$2 \times 3$.
Calculate the total number of chlorine atoms on the products side by performing the multiplication, which gives the total chlorine atoms present.
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