One method for removal of mental ions forms a solutions is to the mental to b ca

Question

One method for removal of mental ions forms a solutions is to the mental to b can be filtered out as a solid. which metal can be used to remove ions from solutions? zinc cobalt copper none of these Sodium does not occur in nature as Na (s) because it is cozily reduced to N'a- it is easily oxidized to Na+ it reacts with water with great difficulty it is easily replaced by silver in its ores it undergoes a disproportionation reaction to Na and Na but less active than aluminum. Cobalt is more active than Zinc is more active than cobalt and iron w the elements in order of increasing nickel but less active than iron. Which of the folio

Explanation / Answer

31 . B cobalt

32. B

silver does not displacement the hydrogen gas from acid solutions because of in electrochemical series silver present below the hydrogen.

33. C  

2AgNO3(aq) + Pb(s) --------> Pb(NO3)2(aq) + 2Ag(s)

In activity series above metals are displacement the below metals from its salt solutions

34. D

Zn(s) + 2HCl(aq) ------> ZnCl2(aq) + H2(g)

Zn(s) + 2H+(aq) + 2Cl-(aq) ------> Zn+2 (aq) + 2Cl-(aq) + H2(g)

net ionic equation

Zn(s) +2 H+ (aq) -------> Zn+2 (aq) + H2(g)

35. B

Na -------> Na+ +e- easly oxidized

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