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Zorluk: ZorChemical Reactions and Compounds

Fill in the missing stoichiometric coefficient and chemical formula in the neutralization equation below. What coefficient and compound formula correctly complete the reaction?

Cevap:When sulfuric acid (H2SO4\text{H}_2\text{SO}_4) reacts with sodium bicarbonate (NaHCO3\text{NaHCO}_3), the complete neutralization reaction is represented by: H2SO4+\text{H}_2\text{SO}_4 + 【2】 NaHCO3→\text{NaHCO}_3 \rightarrow 【Na2SO4】 +2H2O+2CO2+ 2\text{H}_2\text{O} + 2\text{CO}_2.

Cevap

The missing coefficient is 2 and the missing chemical formula is Na2SO4.
A coefficient of 2 is necessary for sodium bicarbonate (NaHCO3) to provide the 2 carbon atoms and 2 sodium atoms found in the products (2CO2 and Na2SO4). The resulting salt is sodium sulfate, whose empirical formula is Na2SO4 because two +1 sodium cations (Na+) are needed to balance one -2 sulfate polyatomic anion (SO4^2-).

Adım Adım Çözüm

1
Balance the carbon and hydrogen atoms between reactants and products to find the coefficient for sodium bicarbonate.
The coefficient for NaHCO3 is 2.
The product side contains 2 carbon atoms (in 2CO2) and a total of 4 hydrogen atoms (in 2H2O), requiring 2 moles of NaHCO3 to combine with 1 mole of H2SO4 on the reactant side.
2
Determine the chemical formula of the salt produced by pairing sodium cations with sulfate anions.
The chemical formula of the salt is Na2SO4.
Sodium forms a singly charged cation (Na+) while the sulfate polyatomic ion carries a -2 charge (SO4^2-), meaning two sodium ions are required to balance one sulfate ion electrically.
3
Verify the conservation of each atomic species across the complete chemical equation.
Reactants: 4 H, 1 S, 10 O, 2 Na, 2 C. Products: 4 H, 1 S, 10 O, 2 Na, 2 C.
The Law of Conservation of Mass requires that the number of atoms of each element on the reactant side must equal the number on the product side.

Anahtar Kavram

Stoichiometric equation balancing and compound formula determination in acid-carbonate neutralization reactions.
Tahmini Süre:1m 30s
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Konular

Chemical Reactions and Compounds

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