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

Bambi

12 July, 23:08

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)

+2

Answers (1)

Know the Answer?

Kymani Stark · 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)