Question

When the following equation is balanced correctly, what are the coefficients? (nh4)2cr2o7 (s) → cr2o3 (s) n2 (g) h2o (g)

a) 2, 2, 4,
b) 10 1, 1,
c) 1, 4 2,
d) 2, 2, 4

Answer 1

The balanced equation for the decomposition of ammonium dichromate is (NH4)2Cr2O7(s) → Cr2O3(s) + N2(g) + 4H2O(g) with coefficients 1, 1, 1, and 4 respectively.

Step-by-step explanation:

When balancing the decomposition reaction of ammonium dichromate ((NH4)2Cr2O7(s)), you will need to ensure that the number of atoms of each element on the reactant side of the equation is equal to the number of atoms of those elements on the product side. According to stoichiometry, one molecule of ammonium dichromate decomposes into one molecule of chromium(III) oxide (Cr2O3(s)), one molecule of nitrogen gas (N2(g)), and four molecules of water (H2O(g)). Therefore, the balanced chemical equation is (NH4)2Cr2O7(s) → Cr2O3 (s) + N2(g) + 4H2O(g), which corresponds to the coefficients 1, 1, 1, and 4, respectively.