Write the molecular equation and net ionic equation for each single replacemeant

Question

Write the molecular equation and net ionic equation for each single replacemeant reaction occured

1. Zinc; HCl

2.Magnesium: HCl

Rank the three metals in order of their realatice reactivity (tendency to be oxidized. Rank the most effecitve first

zinc, copper, magnesium

3.first?

4.Second?

5 Third?

6. The realitice reactivity series for a group of metals and hydrogen is given below.

K>Na>Ca>H>Hg>Au

which (more than one) of these metals would react with hydrochloric acid to evolve H2 (g)?

7.The following oersvations were made for single replacement reactions involving aluminum, lead and silver, and their salts. Aluminum and lead strips reacted with hydrchloric acid, but a silver strip did not. A reaction was ovserved when an Al stripwas placed in solution of Pb(NO3)2 and AgNO3. No reacion was obeserven when an Ag strip was placed in Pb(NO3)2 solutions

arrange the metals in order of their reactivity, listing the more reactive first

first, scond, third?

Explanation / Answer

1. Zinc; HCl

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

Net ionic equation: Zn(s) + 2H+(aq) ----> Zn+2(aq) + H2(g)

2.Magnesium: HCl

Molecular equation : Mg(s) + 2HCl(aq) ----> MgCl2(aq) + H2(g)

Net ionic equation: Mg(s) + 2H+(aq) ----> Mg+2(aq) + H2(g)

3. magnesium - first

4. zinc - second

5. copper - third

6. K>Na>Ca metal in order reacts with HCl and evolves H2 gas.

7. Al> Pb> Ag

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