15 Facts on HBr + AgNO3: What, How To Balance & FAQs

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The reaction between HBr and AgNO3 will give a silver salt and an acid. Let’s take a look at some of the facts of this reaction.

The reaction between Hydrobromic Acid and Silver Nitrate is quite spontaneous. Hydrobromic Acid is a strong acid that can easily react with silver salt to form another silver compound. In this case, Silver Bromide is formed along with Nitric Acid.

Hydrobromic Acid is a mineral acid. It is mainly used to prepare inorganic bromides such as zinc bromide, sodium bromide, calcium bromide, silver bromide, etc. In this reaction, we are using silver salt so that we will get silver bromide. Let’s study some more facts about the HBr + AgNO3 reaction.

What is the product of HBr and AgNO3

When HBr reacts with AgNO3 in ambient conditions, the products formed are Silver Bromide (AgBr) and Nitric Acid (HNO3).

HBr(aq) + AgNO3(aq) → AgBr(s) + HNO3(aq)

What type of reaction is HBr + AgNO3

HBr + AgNO3 is an acid-base type of reaction. Here, HBr is the acid, and AgNO3 is the base. It can also be called a neutralization reaction and precipitation reaction.

How to balance HBr + AgNO3

The HBr + AgNO3 reaction can be balanced in the following way,

HBr(aq) + AgNO3(aq) → AgBr(s) + HNO3(aq)

  • Count the number of atoms of each element on both sides.
  • Here, on L.H.S., H = 1, Br = 1, Ag = 1, N = 1, O = 3 and on R.H.S. H = 1, Br = 1, Ag = 1, N = 1, O = 3
  • Here, you will notice that there already are an equal number of atoms of each element on both sides.
  • Equate the number of atoms of each element on both sides.
  • As there are equal numbers of atoms on both sides, this equation is already balanced.
  • The balanced equation can be written as
  • HBr + AgNO3 → AgBr + HNO3

HBr + AgNO3 titration

HBr + AgNO3 titration is an acid-base type of titration. It is carried out for the quantitative determination of Ag ions in a given solution.

Apparatus Used

Burette, pipette, conical flask, white tile, burette holder.

HBr + AgNO3 titration indicator

The HBr + AgNO3 titration is an acid-base titration. It is common to use phenolphthalein indicator in acid-base titrations. So the indicator used in HBr + AgNO3 titration is phenolphthalein. It gives pink colour in basic medium and is colourless in acidic medium.

HBr + AgNO3 titration Procedure

  • A clean and dry burette is filled with HBr solution.
  • A known amount of AgNO3 solution is taken into a conical flask with the help of a pipette.
  • Phenolphthalein indicator is added to this conical flask.
  • The colour of the solution in the conical flask will be pink.
  • Now, to this conical flask, dropwise, add HBr from the burette.
  • Keep adding the drop until the solution in the conical flask turns colourless. That is your endpoint.
  • The amount of Ag ions in the taken solution can be calculated using the formula N1V1 = N2V2

HBr + AgNO3 net ionic equation

The net ionic equation for the reaction between HBr and AgNO3 is,

Br–(aq) + Ag+(aq) → AgBr(s)

HBr + AgNO3 conjugate pairs

HBr + AgNO3 reaction has the following conjugate pairs,

  • The conjugate base is AgNO3H+.
  • The reaction can be represented as HBr + AgNO3 → Br– + AgNO3H+.

HBr and AgNO3 intermolecular forces

HBr + AgNO3 has the following intermolecular forces,

  • Intermolecular forces between HBr and AgNO3 are of ionic type.
  • This is because they are made of ions.
  • Ionic forces are weaker as compared to covalent bonds, so HBr and AgNO3 readily undergo chemical change.

HBr + AgNO3 reaction enthalpy

The enthalpy of the reaction between HBr and AgNO3 is -113.68 kJ/mol.

Is HBr + AgNO3 a buffer solution

HBr is sometimes used in the preparation of a buffer solution. But the product of the reaction HBr + AgNO3 is not a buffer as it forms a precipitate.

Is HBr + AgNO3 a complete reaction

HBr + AgNO3 are the reactants in the reaction. But those are the only participating species in the reaction. No other species is added to the reaction. These two complete the reaction by forming AgBr and HNO3.

Is HBr + AgNO3 an exothermic or endothermic reaction

HBr + AgNO3 is an exothermic reaction as the change in enthalpy of the reaction is negative.

Is HBr + AgNO3 a redox reaction

No, HBr + AgNO3 reaction is not a redox reaction because none of the species undergoes oxidation or reduction. The oxidation states of each species are given below.

Screenshot 2022 12 05 8.42.13 AM
Oxidation States

Is HBr + AgNO3 a precipitation reaction

HBr + AgNO3 is a precipitation reaction as it forms a precipitate of AgBr. AgBr is insoluble in water and settles at the bottom of the reaction flask.

Is HBr + AgNO3 reversible or irreversible reaction

The HBr + AgNO3 reaction is an irreversible reaction. It forms a precipitate of AgBr, which cannot be turned back into the reactants.

Is HBr + AgNO3 displacement reaction

HBr + AgNO3 is a double displacement reaction because both the reactants are exchanging their ions to form two new products.

Conclusion

The reaction HBr + AgNO3 gives AgBr and HNO3 as products. The chemical equation is already balanced. This is an example of acid-base, neutralization, precipitation, irreversible, and double displacement reactions. It is exothermic in nature.