In which reaction are electrons transferred from one reactant to another reactant?

(1) 2Ca (s) + O2 (g) = >2CaO (s)

(2) AgNO3 (aq) + KCl (aq) = >AgCl (s) + KNO3 (aq)

(3) HCl (aq) + NaOH (aq) = >NaCl (aq) + H2O (l)

(4) H3O + (aq) + OH - (aq) = > 2H=O (l)

Question

Addison Faulkner

Chemistry

8 March, 16:00

In which reaction are electrons transferred from one reactant to another reactant?

(1) 2Ca (s) + O2 (g) = >2CaO (s)

(2) AgNO3 (aq) + KCl (aq) = >AgCl (s) + KNO3 (aq)

(3) HCl (aq) + NaOH (aq) = >NaCl (aq) + H2O (l)

(4) H3O + (aq) + OH - (aq) = > 2H=O (l)

+4

Answers (1)

Know the Answer?

Ariella Silva · Answer 1

The answer is (1). The electrons transfer form one reactant to another means that there is the change of valence. For other choices, the valence of reactant does not change.

In which reaction are electrons transferred from one reactant to another reactant?(1) 2Ca (s) + O2 (g) = >2CaO (s)(2) AgNO3 (aq) + KCl (aq) = >AgCl (s) + KNO3 (aq)(3) HCl (aq) + NaOH (aq) = >NaCl (aq) + H2O (l)(4) H3O + (aq) + OH - (aq) = > 2H=O (l)

In which reaction are electrons transferred from one reactant to another reactant?

(1) 2Ca (s) + O2 (g) = >2CaO (s)

(2) AgNO3 (aq) + KCl (aq) = >AgCl (s) + KNO3 (aq)

(3) HCl (aq) + NaOH (aq) = >NaCl (aq) + H2O (l)

(4) H3O + (aq) + OH - (aq) = > 2H=O (l)