Chemistry, 19.10.2019 09:00, debo4965

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)

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In which reaction are electrons transferred from one reactant to another reactant?
(1) 2ca(s)...