For each precipitation reaction, calculate how many grams of the first reactant are necessary to completely react with 56.5 g of the second reactant. k2so4(aq)+sr(no3)2(aq)→srso4(s)+2kn o3(aq)

The precipitation reaction is as follows:

Here, 1 mole of reactant 1 reacts with 1 mole of reactant 2 .

The mass of is 56.5 g and molar mass is 211.63 g/mol, converting mass into molar mass as follows:

Since, 1 mol of reacts with 1 mol of  thus, 0.267 mol will react with 0.267 mol.

Molar mass of is 174.259 g/mol, mass of  can be calculated as follows:

Therefore, mass of first reactant is 46.52 g

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.