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44 votes
44 votes
Which is the correct complete ionic equation for the reaction of

2HCl(aq) + Zn(s) + H2(g) + ZnCl2(aq)?

a) H+(aq) + CI-(aq) + Zn(s) →
H2(g) + Zn2+(aq) + Cl-(aq)

b) 2H+(aq) + 2C1-(aq) + Zn(s) → H2(g) + Zn2+(aq) + 2Cl-(aq)

c) H+(aq) + Zn(s) → H2(g) + Zn2+(aq)

d) 2H+(aq) + Zn(s) → H2(g) + Zn2+(aq)

User Robert Raboud
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1 Answer

13 votes
13 votes

Answer:

b) 2H+(aq) + 2C1-(aq) + Zn(s) → H2(g) + Zn2+(aq) + 2Cl-(aq)

Step-by-step explanation:

The equation is given as;

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

In writing an ionic equation, only the aqueous compounds dissociates into ions. This means HCl and ZnCl2 would dissociate to form ions.

This is given as;

2H+ + 2Cl- + Zn(s) --> H2(g) + Zn2+ + 2Cl-

The correct option is;

b) 2H+(aq) + 2C1-(aq) + Zn(s) → H2(g) + Zn2+(aq) + 2Cl-(aq)

User Joseph Cottam
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2.8k points