Chemical reactions do not change the identity of the participating atoms; all atoms present at the beginning of the reaction must be present at the end.Balance the chemical reaction by indicating the number of molecules necessary for each reactant and product: ________ Cl₂ + ________ NaBr à________ Br₂ + ________ NaCl.

Question

Quizplus · Accepted Answer

The equation needs to be balanced so that there are equal numbers of each element on both sides of the arrow. Since the only elements present are Cl, Na, and Br, we can balance the equation by putting a coefficient of 1 in front of Cl₂, a coefficient of 2 in front of NaBr, a coefficient of 1 in front of Br₂, and a coefficient of 2 in front of NaCl. This gives us:

1 Cl₂ + 2 NaBr → 1 Br₂ + 2 NaCl

Therefore, the correct answer is C, which represents the balanced equation.

Chemical Reactions Do Not Change the Identity of the Participating