Solved b consider the reaction of magnesium hydroxide with


Mg(OH)2 is a metal hydroxide, also is known as “milk of magnesia” and H2SO4 (sulfuric acid) is a strong mineral acid. Let us examine how they react in detail.

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Mg(OH)2 is an inorganic compound with low water solubility (Ksp = 5.61 x 10-12) và occurs in the form of the mineral brucite. H2SO4 is corrosive và a powerful dehydrating agent. Mg(OH)2 is a base that will react with an acid (H2SO4) in this case.This article will giảm giá with the reaction type, products, enthalpy, & molecular forces associated with the reaction of H2SO4 và Mg(OH)2.

What is the product of H2SO4 & Mg(OH)2

MgSO4 (Magnesium sulfate) và water molecules are produced in the reaction of H2SO4 + Mg(OH)2.Mg(OH)2 + H2SO4 → MgSO4 + H2O

What type of reaction is H2SO4 + Mg(OH)2

H2SO4 + Mg(OH)2 is a neutralization reaction. H2SO4 is an acid that neutralizes the base Mg(OH)2 to form a salt.

How lớn balance H2SO4 + Mg(OH)2

H2SO4 + Mg(OH)2 equation is balanced by the following steps.Mg(OH)2 + H2SO4 → MgSO4 + H2O

Elements involvedReactants sideProduct sideMg11H42S11O65
Counting of the elementsThe elements involved in the reaction are counted in both the reactants và the products.By using stoichiometric coefficients, the charges and the number of elements are equated. Coefficient 2 is added before H2O.Thus, the balanced equation isMg(OH)2 + H2SO4 → MgSO4 + 2H2O

H2SO4 + Mg(OH)2 titration

H2SO4 + Mg(OH)2 is an example of acid-base titration. This comes under strong acid vs strong base titration.ApparatusBeaker, funnel, measuring cylinder, volumetric flask, burette, pipette, conical flask


The phenolphthalein indicator is used for this titration.ProcedureThe standard solution of Mg(OH)2 is prepared in a volumetric flask. The Mg(OH)2 solution is poured into the burette with the help of a funnel.10 ml of the unknown solution of H2SO4 is taken into a conical flask & 2-3 drops of phenolphthalein is added to it.Mg(OH)2 is added dropwise from the burette into the conical flask with constant mixing.Light pink color appears at the endpoint of the reaction. The concordant readings are taken for the calculation of the concentration of the unknown H2SO4 solution.

H2SO4 + Mg(OH)2 net ionic equation

The net ionic equation for H2SO4 + Mg(OH)2 isMg(OH)2(s) + 2H+(aq) → Mg2+(aq) + 2H2O(l)The net ionic equation is derived using the below steps-

The equation is balanced in the first step.

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Mg(OH)2 + H2SO4 → MgSO4 + 2H2OThe states of the reactants & the products are shown.Mg(OH)2(s) + H2SO4(aq) → MgSO4(aq) + 2H2O(l)The strong-electrolytes are split into their corresponding ions. H2O will not split as it is a weak electrolyte.Mg(OH)2(s) + 2H+(aq) +SO42-(aq) → Mg2+(aq)+ SO42-(aq) + 2H2O(l)The common ions are crossed out and thus net ionic equation is obtained.Mg(OH)2(s) + 2H+(aq) → Mg2+(aq) + 2H2O(l)

H2SO4 + Mg(OH)2 conjugate pairs

H2SO4 + Mg(OH)2 will make a conjugate pair asH2SO4 + OH– = SO42- + H2OSO42- is formed as the conjugate base of H2SO4 (an acid).H2O is the conjugate acid of OH– (hydroxide ion) formed by accepting H+ ion.

H2SO4 & Mg(OH)2 intermolecular forces

Ionic interactions are present in Mg(OH)2 as the compound is ionic.Dipole-dipole interactions, hydrogen bonding, and dispersion forces are found in H2SO4 molecules.

H2SO4 + Mg(OH)2 reaction enthalpy

H2SO4 + Mg(OH)2 reaction enthalpy is -96.8 KJ/mol.Products & reactantsEnthalpy in KJ/molH2O-285.8MgSO4-1264.2Mg(OH)2-925H2SO4-814
Enthalpy valuesThe enthalpy is calculated using the formula,∆Hf°(reaction) = ∆Hf°(products) – ∆Hf°(reactants)= -1835.8 – (-1739.0) KJ/mol= -96.8 KJ/mol

Is H2SO4 + Mg(OH)2 a buffer solution

H2SO4 + Mg(OH)2 will not khung a buffer as strong acid (H2SO4) and strong base are used in this reaction.

Is H2SO4 + Mg(OH)2 a complete reaction

H2SO4 + Mg(OH)2 is a complete reaction as the reactants get completely consumed to size the products.

Is H2SO4 + Mg(OH)2 an exothermic or endothermic reaction

H2SO4 + Mg(OH)2 is an exothermic reaction due lớn the liberation of heat in the process. The reaction is negative for the reaction.

Is H2SO4 + Mg(OH)2 a redox reaction

Mg(OH)2 + H2SO4 reaction is not a redox reaction as the oxidation states of elements are the same throughout.

Is H2SO4 + Mg(OH)2 a precipitation reaction

Mg(OH)2 + H2SO4 is not a precipitation reaction due to lớn the products formed (MgSO4) is completely soluble and no precipitate formation takes place.

Is H2SO4 + Mg(OH)2 reversible or irreversible reaction

H2SO4 + Mg(OH)2 is an irreversible reaction as the backward reaction is not feasible and the products obtained will not react with each other to give the reactants.

Is H2SO4 + Mg(OH)2 displacement reaction

H2SO4 + Mg(OH)2 is a double displacement reaction where,Mg(OH)2 + H2SO4 → MgSO4 + H2OMg being more reactive displaces the hydrogen from its sulfate salt and forms MgSO4.

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H+ further combines with OH– to size H2O.ConclusionThe reaction H2SO4 + Mg(OH)2 is exothermic & irreversible. MgSO4 (Epsom salt) is used khổng lồ control the low levels of magnesium in human blood. Mg(OH)2 is used as an antacid to lớn cure indigestion & is used in waste water management.