Question

Write a balanced equation for the following chemical statements.(Use the lowest possible coefficients.)
(a) A characteristic reaction of Group 1A(1) elements: chunks ofsodium react violently with water to form hydrogen gas and sodiumhydroxide solution.
_____ Na(s) +_____ H2O(l)=_____ H2(g) +______ NaOH(aq)

(b) The destruction of marble statuary by acid rain: aqueous nitricacid reacts with calcium carbonate to form carbon dioxide, water,and aqueous calcium nitrate.
_____ HNO3(aq) + _____ CaCO3(s) = _____CO2(g) +____ H2O(l) +_____Ca(NO3)2(aq)

(c) Halogen compounds exchanging bonding partners: phosphorustrifluoride is prepared by the reaction of phosphorus trichlorideand hydrogen fluoride; hydrogen chloride is the other product. Thereaction involves gases only.
_____PCl3(g) + ____ HF(g) = _____ PF3(g) + ______ HCl(g)

(d) Explosive decomposition of dynamite: liquid nitroglycerine(C3H5N3O9) explodes to produce a mixture of gases - carbon dioxide,water vapor, nitrogen, and oxygen.
_______ C3H5N3O9(l) =___ CO2(g) + ____ H2O(g) + ____ N2(g) + ______O2(g)