Which chemical equation is a decomposition reaction? a.2H2O (l)  H2(g) + O2(g)

b. Zn(s) + HCl (aq)  ZnCl2(aq) + H2(g)

c. Al4C3(s) + H2O(l)  CH4(g) + Al(OH)3(s)

d. CH4 (g) + 2O2(g)  CO2(g) + 2H2O(g)

I'm sorry i cant you if you don't list the elements : (

Answerionic bond imfs are stronger than covalent;

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.   

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