hcoona + h2so4

HCOONa is commonly a sodium salt of formic acid and has the potential đồ sộ react with strong acids. Let us see the mechanism of its reaction with H2SO4.

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Sodium formate, also known as sodium methanoate, combines with sulfuric acid đồ sộ synthesize formic acid. HCOONa is formed by absorbing carbon monoxide in solid sodium hydroxide. It appears as white deliquescent granules that, when exposed đồ sộ moisture, transform into liquid. H2SO4 is a colorless, strong oxidizing agent.

The following sections of the article shall discuss in detail the reaction between HCOONa and H2SO4, the products formed, enthalpy of the reaction, the reaction type, etc.

What is the product of H2SO4 and HCOONa?

Formic acid and Sodium sulfate are formed as major products when HCOONa is reacted with H2SO4.

2HCOONa + H2SO4 —> 2HCOOH + Na2SO4

What type of reaction is H2SO4 + HCOONa?

H2SO4 + HCOONa is an example of double displacement reaction, also referred đồ sộ as a salt metathesis reaction.

How đồ sộ balance H2SO4 + HCOONa

The balanced chemical equation for H2SO4 + HCOONa reaction is:

2HCOONa + H2SO4 = 2HCOOH + Na2SO4

Following are the steps đồ sộ equate the reaction mentioned above:

  • The unbalanced equation is first written down, i.e.: HCOONa + H2SO4 = HCOOH + Na2SO4
  • The number of atoms or elements present on both reactant and product sides are counted and tabulated.
AtomsReactant SideProduct Side
Count of atoms on reactant and product side
  • Necessary coefficients are then added đồ sộ the unbalanced atoms đồ sộ establish the balanced reaction.
  • To balance sodium atoms, HCOONa molecule was multiplied by coefficient 2.
  • Secondly, hydrogen was equated on both sides by multiplying HCOOH by coefficient 2.
  • Thus, the balanced chemical equation for the given reaction is as follows:
  • 2HCOONa + H2SO4 —> 2HCOOH + Na2SO4

H2SO4 + HCOONa Titration

HCOONa cannot be titrated against H2SO4 as HCOONa is a monosodium salt of a weak acid. Thus, without a base, H2SO4 and HCOONa titration would yield no significant results.

H2SO4 + HCOONa Net Ionic Equation

The net ionic equation between H2SO4 and HCOONa is: HCOO + Na+ + 2H+ + SO42- = HCOO + H+ + 2Na+ + SO42-

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The following are the steps đồ sộ derive the net ionic equation:

  • Firstly, the complete balanced equation is noted.
  • 2HCOONa + H2SO4 = 2HCOOH + Na2SO4
  • The reacting atoms are then dissociated into their respective ions đồ sộ give the net ionic equation; for example, HCOONa splits in an aqueous solution đồ sộ give HCOO and Na+ ions.
  • In the next step, spectator ions, if any, are eliminated from both sides of the reaction.
  • The final net ionic equation for H2SO4 + HCOONa reaction is mentioned in the next step.
  • HCOO + Na+ + 2H+ + SO42- = HCOO + H+ + 2Na+ + SO42-

H2SO4 + HCOONa Conjugate Pairs

The conjugate pairs formed between reaction H2SO4 + HCOONa are mentioned below:

  • Conjugate base of H2SO4 (after donating a proton) = HSO4
  • Conjugate base of HCOOH = HCOO

H2SO4 and HCOONa Intermolecular Forces

  • For H2SO4, Van der waals dispersion forces, dipole-dipole interactions, and strong intermolecular hydrogen bonding forces are present as intermolecular forces.
  • HCOONa exhibit electrostatic attraction, implying that Ionic intermolecular forces exist due đồ sộ the presence of two ionic species, Na+ and HCOO.
HCOONa Ionic bond

H2SO4 + HCOONa Reaction Enthalpy

The reaction enthalpy of H2SO4 + HCOONa is 5.73 kJ/mol (approximately).

CompoundsMolesEnthalpy of Formation, ΔH⁰f (kJ/mol)
Bond Enthalpy values
  • The standard enthalpy of a reaction is calculated using the formula: ΔH⁰f (reaction) = ΣΔH⁰f (products) – ΣΔH⁰f (reactants)
  • Enthalpy of reaction  = [2×(-424.72) + 1× (-1387.1)] – [2×(-666.5) + 1×(-909.27)] = 5.73 kJ/mol

Is H2SO4 + HCOONa a Buffer Solution?

  • H2SO4 + HCOONa is not a buffer solution because H2SO4 is a strong acid, and no conjugate acid or base is present đồ sộ resist the pH change.
  • However, HCOOH produced in this reaction may combine with HCOONa đồ sộ give an acidic buffer.

Is H2SO4 + HCOONa a Complete Reaction?

  • H2SO4 + HCOONa is a complete reaction as it forms two complete products, HCOOH and Na2SO4.
  • However, at temperatures ranging from 25 đồ sộ 170⁰C, HCOOH may further decompose đồ sộ produce carbon monoxide gas and water.

Is H2SO4 and HCOONa an Exothermic or Endothermic Reaction?

The given reaction is endothermic since the change in enthalpy is positive. As a result, external energy is absorbed by the reaction đồ sộ reach completion.

Is H2SO4 + HCOONa a Redox Reaction?

H2SO4 + HCOONa is not a redox reaction since no change in the oxidation states of elements is observed on both sides of the reaction.

Is H2SO4 + HCOONa a Precipitation Reaction?

H2SO4 + HCOONa is not a precipitation reaction because both the products obtained are highly soluble in water, ruling out the possibility of precipitate formation.

Is H2SO4 + HCOOH Reversible or Irreversible Reaction?

H2SO4 + HCOONa is irreversible in nature because the products formed can no longer perform reverse reactions đồ sộ synthesize the reactants under the same reaction conditions.

Is H2SO4 + HCOOH Displacement Reaction?

H2SO4 + HCOONa is a double displacement reaction because of the cationic and anionic exchange of atoms that occurs during product formation.

Double displacement mechanism


H2SO4 and HCOONa reaction is one of the ways đồ sộ synthesize formic acid, an important intermediate, and sodium sulfate, which is employed as an efficient drying agent in organic reactions. Formic acid mainly has varied uses in the field of agriculture as a preservative, in fuel cell, as a pH modifier, and ví on.

Read more facts on H2SO4:

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