When sodium reacts with chlorine, sodium chloride is produced. Andrew represented this reaction with this equation:

Na + Cl2 → 2NaCl

The equation is (BLANK 1) because the number of (BLANK 2) atoms is (BLANK 3) on both sides of the arrow.

BLANK 1
A) Balanced
B) Not Balanced

BLANK 2
A) Chlorine
B) Sodium

BLANK 3
A) Equal
B) Not Equal

Respuesta :

Answer;

B) Not Balanced

B) Sodium

B) Not Equal

The equation is not balanced because the number of sodium atoms is not equal on both sides of the arrow.

Explanation;

  • According to the law of conservation of mass, the mass of reactants should always be the same as the mass of the products in a chemical equation. Therefore, the number of atoms of each element in a chemical equation should always be the same on both sides of the equation, that is the side of reactants and side of products.
  • Therefore,any chemical equation requires balancing to ensure that the number of atoms of each element is equal in both sides of the equation. Balancing is a try and error process that ensures that the law of conservation of mass holds.
  • Thus, the balanced chemical equation is;

2Na + Cl2 → 2NaCl

Answer: B) Not Balanced

B) Sodium

B) Not Equal

Explanation: