What is the formula of ammonia? What is the chemical formula for ammonia?

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Basic Chemical FormulasFormula TypeFormulaName/DescriptionExplanationMolecular FormulaNH₃AmmoniaShows the exact number of atoms: 1 nitrogen atom bonded to 3 hydrogen atomsEmpirical FormulaNH₃AmmoniaSimplest whole number ratio of atoms (same as molecular in this case)Structural FormulaH-N-H with lone pairAmmonia structureShows how atoms are connected; nitrogen has one lone pair of electronsCondensed FormulaNH₃AmmoniaSimplified representation showing atom types and quantitiesAmmonia in Aqueous SolutionsFormula TypeFormulaName/DescriptionExplanationAmmonia in WaterNH₃ + H₂O ⇌ NH₄⁺ + OH⁻Base dissociationAmmonia acts as a weak base, accepting protons from waterAmmonium HydroxideNH₄OHAmmonium hydroxideTraditional representation of ammonia solution (though NH₃·H₂O is more accurate)Ammonium IonNH₄⁺Ammonium cationFormed when ammonia accepts a proton (H⁺)Hydroxide IonOH⁻Hydroxide anionReleased when ammonia acts as a baseEquilibrium Constants and pH CalculationsFormula TypeFormulaName/DescriptionExplanationKb ExpressionKb = [NH₄⁺][OH⁻]/[NH₃]Base dissociation constantMeasures strength of ammonia as a base; Kb = 1.8 × 10⁻⁵ at 25°CKa ExpressionKa = [NH₃][H₃O⁺]/[NH₄⁺]Acid dissociation constantFor ammonium ion acting as acid; Ka = 5.6 × 10⁻¹⁰ at 25°CpKb FormulapKb = -log(Kb)Negative logarithm of KbpKb = 4.74 for ammonia at 25°CpKa FormulapKa = -log(Ka)Negative logarithm of KapKa = 9.25 for ammonium ion at 25°CKw RelationshipKa × Kb = Kw = 1.0 × 10⁻¹⁴Ion product of waterRelationship between Ka and Kb for conjugate acid-base pairspH and pOH CalculationsFormula TypeFormulaName/DescriptionExplanationpH of NH₃ SolutionpH = 14 - pOHpH calculationAfter finding pOH from Kb expressionpOH from KbpOH = ½(pKb - log C)Weak base approximationC is the initial concentration of NH₃Henderson-HasalbalchpH = pKa + log([NH₃]/[NH₄⁺])Buffer equationFor NH₃/NH₄⁺ buffer systemsIon Concentration[OH⁻] = √(Kb × C)Hydroxide concentrationApproximation for weak base solutionsIndustrial and Synthesis FormulasFormula TypeFormulaName/DescriptionExplanationHaber ProcessN₂ + 3H₂ ⇌ 2NH₃Industrial synthesisHigh temperature and pressure synthesis of ammoniaCatalyzed HaberN₂ + 3H₂ → 2NH₃ (with Fe catalyst)Catalyzed synthesisIron catalyst increases reaction rateEnthalpy ChangeΔH = -92.4 kJ/molHeat of formationEnergy released when forming NH₃ from elementsCombustion and DecompositionFormula TypeFormulaName/DescriptionExplanationComplete Combustion4NH₃ + 3O₂ → 2N₂ + 6H₂OBurning in limited oxygenProduces nitrogen gas and waterCatalytic Oxidation4NH₃ + 5O₂ → 4NO + 6H₂OOstwald processFirst step in nitric acid productionThermal Decomposition2NH₃ → N₂ + 3H₂High temperature breakdownReverse of Haber processPhysical Property FormulasFormula TypeFormulaName/DescriptionExplanationMolar MassM = 17.03 g/molMolecular weightSum of atomic masses: N(14.01) + 3H(1.008)Density (gas, STP)ρ = 0.771 g/LGas densityAt standard temperature and pressureDensity (liquid)ρ = 0.682 g/cm³Liquid densityAt -33.34°C (boiling point)Ideal Gas LawPV = nRTGas behaviorWhere n = moles of NH₃Concentration and MolarityFormula TypeFormulaName/DescriptionExplanationMolarityM = moles NH₃ / L solutionMolar concentrationStandard concentration unitMass Percentage% = (mass NH₃ / total mass) × 100Weight percentageCommon for aqueous solutionsppm Conversionppm = (mg NH₃ / L solution)Parts per millionFor dilute environmental samplesNormalityN = M × 1Normal concentrationFor NH₃, normality equals molarity (monoprotic base)Constants and ValuesParameterValueUnitsConditionsKb (Base constant)1.8 × 10⁻⁵-25°CpKb4.74-25°CBoiling Point-33.34°C1 atmMelting Point-77.73°C1 atmCritical Temperature132.25°C-Bond Angle (H-N-H)106.67degreesGas phase

Formula Type	Formula	Name/Description	Explanation
Molecular Formula	NH₃	Ammonia	Shows the exact number of atoms: 1 nitrogen atom bonded to 3 hydrogen atoms
Empirical Formula	NH₃	Ammonia	Simplest whole number ratio of atoms (same as molecular in this case)
Structural Formula	H-N-H with lone pair	Ammonia structure	Shows how atoms are connected; nitrogen has one lone pair of electrons
Condensed Formula	NH₃	Ammonia	Simplified representation showing atom types and quantities

Formula Type	Formula	Name/Description	Explanation
Ammonia in Water	NH₃ + H₂O ⇌ NH₄⁺ + OH⁻	Base dissociation	Ammonia acts as a weak base, accepting protons from water
Ammonium Hydroxide	NH₄OH	Ammonium hydroxide	Traditional representation of ammonia solution (though NH₃·H₂O is more accurate)
Ammonium Ion	NH₄⁺	Ammonium cation	Formed when ammonia accepts a proton (H⁺)
Hydroxide Ion	OH⁻	Hydroxide anion	Released when ammonia acts as a base

Formula Type	Formula	Name/Description	Explanation
Kb Expression	Kb = [NH₄⁺][OH⁻]/[NH₃]	Base dissociation constant	Measures strength of ammonia as a base; Kb = 1.8 × 10⁻⁵ at 25°C
Ka Expression	Ka = [NH₃][H₃O⁺]/[NH₄⁺]	Acid dissociation constant	For ammonium ion acting as acid; Ka = 5.6 × 10⁻¹⁰ at 25°C
pKb Formula	pKb = -log(Kb)	Negative logarithm of Kb	pKb = 4.74 for ammonia at 25°C
pKa Formula	pKa = -log(Ka)	Negative logarithm of Ka	pKa = 9.25 for ammonium ion at 25°C
Kw Relationship	Ka × Kb = Kw = 1.0 × 10⁻¹⁴	Ion product of water	Relationship between Ka and Kb for conjugate acid-base pairs

Formula Type	Formula	Name/Description	Explanation
pH of NH₃ Solution	pH = 14 - pOH	pH calculation	After finding pOH from Kb expression
pOH from Kb	pOH = ½(pKb - log C)	Weak base approximation	C is the initial concentration of NH₃
Henderson-Hasalbalch	pH = pKa + log([NH₃]/[NH₄⁺])	Buffer equation	For NH₃/NH₄⁺ buffer systems
Ion Concentration	[OH⁻] = √(Kb × C)	Hydroxide concentration	Approximation for weak base solutions

Formula Type	Formula	Name/Description	Explanation
Haber Process	N₂ + 3H₂ ⇌ 2NH₃	Industrial synthesis	High temperature and pressure synthesis of ammonia
Catalyzed Haber	N₂ + 3H₂ → 2NH₃ (with Fe catalyst)	Catalyzed synthesis	Iron catalyst increases reaction rate
Enthalpy Change	ΔH = -92.4 kJ/mol	Heat of formation	Energy released when forming NH₃ from elements

What is the formula of ammonia? What is the chemical formula for ammonia?

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Parameter	Value	Units	Conditions
Kb (Base constant)	1.8 × 10⁻⁵	-	25°C
pKb	4.74	-	25°C
Boiling Point	-33.34	°C	1 atm
Melting Point	-77.73	°C	1 atm
Critical Temperature	132.25	°C	-
Bond Angle (H-N-H)	106.67	degrees	Gas phase

Formula Type	Formula	Name/Description	Explanation
Molar Mass	M = 17.03 g/mol	Molecular weight	Sum of atomic masses: N(14.01) + 3H(1.008)
Density (gas, STP)	ρ = 0.771 g/L	Gas density	At standard temperature and pressure
Density (liquid)	ρ = 0.682 g/cm³	Liquid density	At -33.34°C (boiling point)
Ideal Gas Law	PV = nRT	Gas behavior	Where n = moles of NH₃