Write a balanced molecular equ
Write a balanced molecular equation for the reaction of each ofthe following metals with dilute hydrochloric acid. If no reactionoccurs, put NR. (a) Ni (b) Fe (c) Ag (d) Au
Answer:
- Ni
Nickel reacts with diluted hydrogen chloride to produce nickel(II) chloride and hydrogen.
Balanced molecular equation is
Ni (s) + 2HCl (aq)→ NiCl2 + H2 (g)
This is slow reaction.
- Fe
Fe reacts with HCl and produces iron(II) chloride and hydrogengas.
Balanced molecular equation is
Fe(s) + 2HCl (aq) → FeCl2 (aq) + H2(g)
- Ag
Ag do not react with dil. HCl, therefore NR (No reaction)
This is because, like other reactive metals, silver cannotdisplace hydrogen from HCl.
Reason is Silver is below hydrogen in the (electrochemicalseries) reactivity series, so it cannot displace the hydrogen fromHCl.
- Au
Au do not react with dil. HCl, therefore NR (No reaction)
This is because, like other reactive metals, Au cannot displacehydrogen from HCl.
Reason is Au is below the hydrogen in the (electrochemicalseries) reactivity series, so it cannot displace the hydrogen fromHCl. Therefore there is no reaction.
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