balanced equation of potassium and chromium atoms.
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Answer:
Start by writing the unbalanced chemical equation.
Potassium dichromate,
K
2
Cr
2
O
7
, will react with hydrosulfuric acid, which is aqueous hydrogen sulfide,
H
2
S
, in acidic medium to precipitate sulfur,
S
, and produce aqueous chromium(III) sulfate,
Cr
2
(
SO
4
)
3
, potassium sulfate,
K
2
SO
4
, and water.
K
2
Cr
2
O
7
(
a
q
)
+
H
2
S
(
a
q
)
+H2SO4(aq) → Cr2(SO4)3(aq)+S(s)⏐⏐
↓
+K2SO4(aq)+H2O(l)
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