With which of the following will the ammonium ion form an insoluble salt? A) chl

Question

With which of the following will the ammonium ion form an insoluble salt? A) chloride B) sulfate C) carbonate D) sulfate and carbonate E) none of the above The net ionic equation for the reaction between aqueous nitric acid and aqueous sodium hydroxide is _____ A) H^+ (aq) + HNO_3(aq) + 2OH^- rightarrow 2 H_2O(l) + MIO_3^- B) HNO_3(aq) + NaOH (aq) rightarrow NaNO_3 (aq) + H_2O(l) C) H^+ (aq) + OH^-(aq) rightarrow NO_3^-(aq) + H_2O (L) E) H^+ (aq) + Na^+ (aq) + OH^- (aq) rightarrow H_2O(l) + Na^+(aq) Oxidation is the _____ and reduction is the _____ A) gain of oxygen, loss of electrons B) loss of oxygen, gain of electrons C) loss of electrons, gain of electrons D) gain of oxygen, loss of mass E) gain electrons, loss of electrons Which of the following is an oxidation-reduction reaction? A) Cu(s) + 2AgNO_3(aq) rightarrow 2Ag (s) + Cu(NO_3)_2(aq) B) HCl(aq) + NaOH(aq) rightarrow H_2O(l) + NaCl(aq) C) AgNO_3(aq) + HCl(aq) rightarrow AgCl(s) + HNO_3(aq) D) Ba(C_2H_3O_2)_2(aq) + Na_2SO_4(aq) rightarrow BaSO_4 (s) + 2Na_2C_2H_3O_2(aq) E) H_2CO_3(aq) + Ca(NO_3)_2 (aq) rightarrow 2HNO_3(aq) + CaCO_3(s)

Explanation / Answer

1. D. carbonate and sulphate

2. HNO3(aq) + NaOH(aq) -----------> NaNO3 (aq) + H2O(l)

   H^+(aq) + NO3^-(aq) + Na^+(aq)+OH^-(aq) -----------> Na^+(aq) +NO3^- (aq) + H2O(l)

    removal of spectator ions to get net ionic equation

H^+(aq) +OH^-(aq) -----------> H2O(l) net ionic equation >>>>>answer C

4. Cu (s) + 2AgNO3(aq) -----------> 2Ag (s) + Cu(NO3)2

Cu oxidation number increases from 0 to +2. It is oxidation

Ag oxidation number decreases from +1 to 0 . It is reduction

  

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