Complete and balance each of the following equations. if no reaction occurs, write noreaction. 1.) nano3(aq)+kcl(aq)→ 2.) nai(aq)+hg2(c2h3o2)2(aq)→ 3.) (nh4)2s(aq)+srcl2(aq)→ $.) bai2(aq)+agno3(aq)→

1.) NaNO3(aq)+KCl(aq)→ NaCl + KNO3

2.) NaI(aq)+Hg2(C2H3O2)2(aq)→ Hg2I(s) + Na(C2H3O2)2(aq)

3.) (NH4)2S(aq)+SrCl2(aq)→ 2 (NH4)Cl + SrS

4.) BaI2(aq)+ 2AgNO3(aq)→ Ba(NO3)2 (aq) + 2 AgI (s) 

The balanced equations for the equations given are;

NaNO3(aq)+KCl(aq)→ NaCl(aq) + KNO3(aq0 NaI(aq)+Hg2(C2H3O2)2(aq)→ Hg2I(s) + Na(C2H3O2)2(aq) (NH4)2S(aq)+SrCl2(aq)→ 2NH4Cl(aq) + SrS(s) BaI2(aq)+ 2AgNO3(aq)→ Ba(NO3)2(aq) + 2AgI (s)  Further Explanation: Chemical equations   Chemical equations are equations showing reactions between reactants to form products. Chemical equations show the reactants or starting substances and products or substances formed during the reaction. Law of conservation of mass   The law of conservation requires that when writing chemical equations, the mass of the reactants should be equal; to the mass of the products. This is done by making sure the number of atoms of each element involved in the chemical equation is equal on both sides of the equation. To ensure the law of conservation in chemical equations is observed we balance chemical equations. Balancing chemical equation: Balancing chemical equations is a try and error method that ensures the number of atoms in the side of the reactants is equal to the number of atoms in the side of products. Balancing chemical equations may also require inclusion of state symbols which shows the state of each compound or element involved in the chemical reactions.

Keywords: Chemical equations, balancing of chemical equations

Learn more about: Chemical equations: Balancing of chemical equations: Law of conservation of mass:

Level: high school

Subject: Chemistry

Topic: Chemical equations

Sub-topic: Balancing chemical equations  

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.