## What is the enthalpy of formation of ammonium chloride?

Enthalpy of formation of solid at standard conditions (nominally 273.15 K, 1 atm.)

 Comment ΔfH°solid (kJ/mol) -314.55 Method Review Reference Chase, 1998 Data last reviewed in September, 1965

## What is the molar enthalpy of solution for ammonium chloride?

+14.8 kJ/mol
The molar enthalpy of solution for ammonium chloride is +14.8 kJ/mol.

What is the standard enthalpy of formation of ammonia?

– 46.0 KJ mol^-1
The enthalpy of formation of ammonia is – 46.0 KJ mol^-1 .

What is the standard enthalpy of formation for HCl aq?

Selected ATcT enthalpy of formation based on version 1.122 of the Thermochemical Network

Species Name Formula ΔfH°(298.15 K)
Hydrogen chloride HCl (g) -92.173
Hydrogen chloride HCl (aq) -166.994

### What is the enthalpy of HCl?

-92.3 kJ/mol
The standard enthalpy of formation of HCl(g) is -92.3 kJ/mol.

### What happens when ammonium chloride is dissolved in water?

When you dissolve ammonium chloride crystals in water (H2O), the ammonium chloride compound decomposes into its component ions: NH4+ and Cl-. The dissociation chemical reaction is: NH4Cl(solid) = NH4+(aqueous) + Cl-(aqueous). The ammonium chloride goes back to its solid form by crystallization.

What is the formula for molar enthalpy?

Molar enthalpy = DH/n. n = number of moles of reactant. So we convert the carefully measured mass in to moles by dividing by molar mass. C = concentration in “M” = moles/L.

Related Posts

What is the enthalpy of NH3 if?

The standard enthalpy of formation of NH3. is 46.0 kJ/mol. If the enthalpy of formation of H2. from its atoms is -436 kJ/mol and that of N2.

#### What is the enthalpy of formation for water?

-285,820
Molar Enthalpy of Formation of Various Substances

Substance Formula hfo [kJ/kmol]
Water H2O(l) -285,820
Hydrogen peroxide H2O2(g) -136,310
Ammonia NH3(g) -46,190
Methane CH4(g) -74,850

#### What is the standard entropy of HCl?

Entropy of gas at standard conditions (298.15 K, 1 bar.)

 Comment S°gas,1 bar (J/mol*K) 186.902 ± 0.005 Method Review Reference Cox, Wagman, et al., 1984 CODATA Review value

When ammonium chloride is dissolved in water the beaker gets cold?

So, when ammonium chloride is dissolved in water then the beaker gets cold. That means the system is absorbing heat from the surrounding and thus the reaction is an endothermic reaction.

When solid ammonium chloride NH4Cl is dissolved in water the solution will be?

colder
When ammonium chloride (NH4Cl) is dissolved in water, the. solution becomes colder.

## How do you calculate molar change?

Molar Enthalpy Change

1. Example:
2. Mass of Water = 100 cm3
3. Heat capacity of Water = 4.2 j / g.
4. Temperature rise = 20°C.
5. Energy transferred = 100 x 4.2 x 20 = 8400 J.
6. Moles of Propane burned = 0.5 ÷ 44 = 0.01136.
7. Molar Enthalpy change = 8.4 ÷ 0.01136 = 739.
8. Molar Enthalpy change = – 739 kJ / mol.

## What is the enthalpy of sublimation equal to?

Enthalpy of fusion
Thus, Enthalpy of sublimation = Enthalpy of fusion + Enthalpy of vaporisation.

What is the enthalpy of formation of H G?

H(g) – 218 kJ/mol.