Complete and balance each of the following equations. a) Cs 2 CO 3 (aq) + CaCl 2

Question

Complete and balance each of the following equations.

a) Cs2CO3(aq) + CaCl2(aq) ?

Cs2CO3(aq) + CaCl2(aq) ? CaCO3(s) + CsCl(s)

Cs2CO3(aq) + CaCl2(aq) ? CaCO3(aq) + 2CsCl(s)

Cs2CO3(aq) + CaCl2(aq) ? CaCO3(s) + 2CsCl(aq)

Cs2CO3(aq) + CaCl2(aq) ? CaCO3(s) + 2CsCl(s)

b) Na2CO3(aq) + Ca(OH)2(aq) ?

Na2CO3(aq) + Ca(OH)2(aq) ? CaCO3(s) + 2NaOH(s)

Na2CO3(aq) + Ca(OH)2(aq) ? CaCO3(s) + 2NaOH(aq)

Na2CO3(aq) + Ca(OH)2(aq) ? CaCO3(s) + NaOH(s)

Na2CO3(aq) + Ca(OH)2(aq) ? CaCO3(aq) + NaOH(s)

c) Li(s) + HCl(aq) ?

2Li(s) + 2HCl(aq) ? 2LiH(aq) + Cl2(g)

2Li(s) + 2HCl(aq) ? 2LiCl(aq) + H2(g)

2Li(s) + 2HCl(aq) ? 2LiCl(s) + H2(g)

2Li(s) + 2HCl(aq) ? 4LiCl(aq) + 2H2(g)

d) Na(s) + NbCl5(g) ?

5Na(s) + NbCl5(g) ? Nb(s) + 5NaCl(s)

2Na(s) + NbCl5(g) ? NbCl4(s) + 2NaCl(s)

5Na(s) + NbCl5(g) ? Nb(g) + 5NaCl(s)

4Na(s) + NbCl5(g) ? NbCl(s) + 4NaCl(s)

Explanation / Answer

To solve this problem you need to check that the products are soluble in water to know the state that they are. You can see a Kps table to check this info.

a) Cs2CO3(aq) + CaCl2(aq) -> CaCO3(s) + 2CsCl(aq)

b) Na2CO3(aq) + Ca(OH)2(aq) -> CaCO3(s) + 2NaOH(aq)

c) 2Li(s) + 2HCl(aq) -> 2LiCl(aq) + H2(g) this is a displacement reaction, where a gas is produce.

d) 5Na(s) + NbCl5(g) -> Nb(s) + 5NaCl(s), this is not a very usual reaction but it is a displacement type too. The niobium is a metal, so will be in a soli in room temperature, sodium chloride is a salt, in room temperature will be a solid too.

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