. Complete the missing components/variables given as x and y in the following reactions

(a) Pb(NO3 ) 2 (aq) + 2KI(aq) → PbI2 (x) + 2KNO3 (y)

(b) Cu(s) + 2Ag NO3 (aq) → Cu(NO3 ) 2 (aq) + x(s)

(c) Zn(s) + H2 SO4 (aq) → ZnSO4 (x) + H2 (y)

(d) CaCO3 (s) →x CaO(s) + CO2 (g)

Best Answer

Answer: (a) Pb(NO3 ) 2 (aq) + 2KI(aq) → PbI2 (s) + 2KNO3 (aq)

(b) Cu(s) + 2Ag NO3 (aq) → Cu(NO3 ) 2 (aq) + 2Ag(s)

(c) Zn(s) + H2 SO4 (aq) → ZnSO4 (aq) + H2 (g)

(d) CaCO3 (s) →heat→ CaO(s) + CO2 (g)

1. x(s), y (aq)

2. x is 2Ag

3. x-(aq) y(g)

4. x is heat

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