Which of the following is not a balanced equation?

C a (H O)_{2} + C O_{2} \to C a C O_{3} + H_{2} O

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F e + C u S O_{4} \to F e S O_{4} + C u

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K C l O_{4} Δ \to K C l + 2 O_{2}

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C u + 2 H N O_{3} \to C u (N O_{3})_{2} + 2 N O_{2} + H_{2} O

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Solution

The correct option is D $C u + 2 H N O_{3} \to C u (N O_{3})_{2} + 2 N O_{2} + H_{2} O$
The reaction of copper with nitric acid is not balanced because number of nitrogen, hydrogen and oxygen atom on both side is not equal. The balanced chemical reaction is :
$C u + 4 H N O_{3} \to C u (N O_{3})_{2} + 2 N O_{2} + 2 H_{2} O$

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Similar questions

C u + H_{2} S O_{4} \to C u S O_{4} + {S O}_{2} ↑ + H_{2} O

F e + H_{2} O \to {F e}_{3} O_{4} + H_{2} ↑

{C H}_{4} + O_{2} \to C O_{2} + H_{2} O

C u + H_{2} {S O}_{4} - \to C u S O_{4} + {S O}_{2} ↑ + H_{2} O

F e + + H_{2} O - \to {F e}_{3} O_{4} + H_{2} ↑

{C H}_{4} + O_{2} \to C O_{2} + H_{2} O

C u + H N O_{3} \to C u (N O_{3})_{2} + N O + H_{2} O

C u + H N O_{3} \to C u (N O_{3})_{2} + N O_{2} + H_{2} O

C u + H N O_{3} \to C u (N O_{3})_{2} + N O + H_{2} O

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