The correct chemical equation for the reaction of sodium bromide and lead nitrate is: . a. NaBr(aq) + Pb(NO3)2aq) >PbBr2ts) + NaNO3(aq)
b. NaBr(aq) + Pb(NO3)2> PbBr2(aq) + NaNO3(s)
c. 2 NaBr(aq) + Pb(NO3)2(aq)> PbBr2(aq) + NaNO3(s)
d. 2 NaBr(aq) + Pb(NO3)2(aq)> PbBr2 + NaNO3(aq)

Answer : The correct chemical equation is:

Explanation :

Balanced chemical equation : It is defined as the equation in which the atoms of individual elements present of reactant side must be equal to the product side.

According to the question, when sodium bromide reacts with lead nitrate then it reacts to give sodium nitrate and lead bromide as a products.

The balanced chemical equation will be:

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definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.