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Zorluk: OrtaChemical Reactions and Compounds

Consider the chemical equation for the formation of ammonia from its constituent elements: N2+‾H2→2NH3\text{N}_2 + \underline{\quad}\text{H}_2 \rightarrow 2\text{NH}_3. What missing coefficient and reaction type correctly complete the statement?

Cevap:In the chemical equation N2+【3】H2→2NH3\text{N}_2 + 【3】\text{H}_2 \rightarrow 2\text{NH}_3, the coefficient required to balance the hydrogen atoms is 【3】, and because two distinct reactants combine to yield a single compound, this process is classified as a 【synthesis】 reaction.

Cevap

The missing coefficient is 3 and the reaction is classified as a synthesis (or combination) reaction.
On the product side, 2NH32\text{NH}_3 contains 2 nitrogen atoms and 6 hydrogen atoms. On the reactant side, N2\text{N}_2 accounts for the 2 nitrogen atoms, so 3 molecules of H2\text{H}_2 (3×2=63 \times 2 = 6 atoms) are required to balance the hydrogen. Furthermore, because two separate elemental substances combine to form a single compound, the reaction represents a synthesis (combination) reaction.

Adım Adım Çözüm

1
Count the number of hydrogen atoms in the product side of the equation.
The product side contains 2NH32\text{NH}_3, which has 2×3=62 \times 3 = 6 hydrogen atoms.
According to the law of conservation of mass, the total number of atoms of each element must be equal on both sides of the equation.
2
Determine the coefficient for the reactant H2\text{H}_2 needed to provide 6 hydrogen atoms.
Since each diatomic hydrogen molecule (H2\text{H}_2) contains 2 atoms, dividing 6 by 2 yields a coefficient of 3.
Setting the coefficient of H2\text{H}_2 to 3 balances the hydrogen atoms (3×2=63 \times 2 = 6) while nitrogen is already balanced (2=22 = 2).
3
Identify the reaction type based on the reactants and products.
Two elemental reactants (N2\text{N}_2 and H2\text{H}_2) combine directly to form a single chemical compound (NH3\text{NH}_3).
A chemical reaction in which two or more simple substances combine to form a single complex substance is defined as a synthesis (or combination) reaction.

Anahtar Kavram

Balancing chemical equations by conserving atoms and classifying reaction types (synthesis/combination).
Tahmini Süre:1m 0s
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Konular

Chemical Reactions and Compounds

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