Question

Q8) Complete the following equations of precipitation reaction. Name the precipitate obtained.
(a) CaCl2 + Na2CO3
(b) Zn(NO3)2 + Na2CO3
(c) ZnSO4 + (NH4)2CO3
(d) Pb(NO3)2 + Naci
(e) Pb(NO3)2 + Na2SO4​

Answer 1

Answer:

a) CaCl2(aq) + Na2CO3(aq) → CaCO3(s) + 2NaCl(aq)

b) Na2CO3 (aq) + Zn(NO3)2 (aq) -->2 NaNO3(aq) + ZnCO3 (s)

c) 2ZnSO4 + 2(NH4)2CO3 → Zn2(CO3)2 + 2(NH4)2SO4

d) NaCl + Pb(NO3)2 → NaNO3 + PbCl2

e) Pb(NO3)2 + Na2SO4 → PbSO4 + 2NaNO3

Answer 2

Explanation:

a) CaCl2(aq) + Na2CO3(aq) → CaCO3(s) + 2NaCl(aq)

b) Na2CO3 (aq) + Zn(NO3)2 (aq) -->2 NaNO3(aq) + ZnCO3 (s)

c) 2ZnSO4 + 2(NH4)2CO3 → Zn2(CO3)2 + 2(NH4)2SO4

d) NaCl + Pb(NO3)2 → NaNO3 + PbCl2

e) Pb(NO3)2 + Na2SO4 → PbSO4 + 2NaNO3