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Exploring the Reactions of H2SO4 and SrCO3

Properties of H2SO4 and SrCO3

Properties of H2SO4

H2SO4 is a hygroscopic, strong inorganic acid that can act as a dehydrating agent. It has a high acid dissociation constant (Ka) and can dissociate into H+ and SO4-2 ions in solution. It is a colorless, odorless, and oily liquid that can cause severe burns upon contact with the skin. H2SO4 is widely used in various industrial sectors, including fertilizers, refining, and chemical production.

Properties of SrCO3

SrCO3 is an insoluble metal carbonate that is slightly basic and has low solubility, with a solubility product (Ksp) of 5.0×10^-9 at 25°C. It is a white, odorless powder that occurs naturally as the mineral strontianite. It is widely used in the manufacture of color television tubes, fireworks, and magnets. SrCO3 is non-toxic and not flammable, making it safe for use in certain applications.

Reactions of H2SO4 and SrCO3

Reaction Overview

When H2SO4 reacts with SrCO3, it produces SrSO4, CO2, and water molecules. This type of reaction is a displacement or neutralization reaction, where an acid reacts with a base to produce a salt and water.

Balanced Chemical Equation

The balanced chemical equation for this reaction is given as follows: H2SO4 + SrCO3 → SrSO4 + CO2 + H2O. The reaction involves the combination of H+ ions from H2SO4 with CO32- ions from SrCO3 to form H2O and CO2.

Reaction Details

  • The remaining sulfate ions (SO42-) from H2SO4 combine with Sr2+ ions from SrCO3 to produce strontium sulfate (SrSO4) as a solid precipitate.
  • The reaction between H2SO4 and SrCO3 can be titrated using a back titration with a NaOH solution and phenolphthalein indicator.
  • The reaction is complete when two concordant readings are obtained, and the concentration of carbonate can be determined.
  • The net ionic equation for the reaction between H2SO4 and SrCO3 involves the removal of spectator ions.

Net Ionic Equation

H2SO4 and SrCO3 are strong electrolytes, but CO2 is a weak electrolyte. Therefore, the net ionic equation for the reaction is H+ + CO32- → H2O + CO2.

Conjugate Pairs and Intermolecular Forces

  • Conjugate pairs in H2SO4 and SrCO3 include CO32- (conjugate base), SO42- (conjugate acid), and HSO4- (conjugate base).
  • Intermolecular forces in H2SO4 and SrCO3 include ionic interactions, dispersion forces, hydrogen bonding, and dipole-dipole interactions.

Enthalpy of Reaction

The enthalpy of the reaction between H2SO4 and SrCO3 can be calculated using tabulated values of enthalpy of formation (Hf). The reaction is exothermic, with heat liberated during the reaction, resulting in a negative enthalpy value.

Reaction Characteristics

  • The reaction between H2SO4 and SrCO3 is a precipitation reaction that results in the formation of an insoluble product: strontium sulfate.
  • The reaction between H2SO4 and SrCO3 is irreversible because entropy favors the forward reaction, and CO2 gas is produced, which escapes from the system.

Conclusion

In conclusion, the reaction between H2SO4 and SrCO3 is a displacement or neutralization reaction that produces SrSO4, CO2, and water molecules. The reaction is exothermic, irreversible, and results in the formation of an insoluble product: strontium sulfate.

H2SO4 is a hygroscopic, strong inorganic acid that can act as a dehydrating agent, while SrCO3 is an insoluble metal carbonate that is slightly basic and has low solubility. H2SO4 and SrCO3 can undergo various reactions resulting in the production of SrSO4, CO2, and water molecules.

H2SO4 is a strong inorganic acid commonly used in industrial sectors, whereas SrCO3 is an insoluble metal carbonate used in the manufacture of color television tubes, fireworks, and magnets. The reactions between H2SO4 and SrCO3 are neutralization or displacement reactions, involve the removal of spectator ions, and result in the formation of an insoluble product, strontium sulfate.

An exothermic reaction, the reaction is irreversible, and the net ionic equation involves H+ and CO32- ions.

FAQs

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