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

Chemistry

Boston Shepherd

13 March, 01:16

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)

+5

Answers (1)

Know the Answer?

Troy Hines · 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)