In the redox reaction between iodine (I₂) and thiosulfate (S₂O₃²⁻), the half-reaction for iodine is the reduction of I₂ to iodide (I⁻). The half-reaction can be represented as:
[ \text{I}_2 + 2 \text{e}^- \rightarrow 2 \text{I}^- ]
For thiosulfate, it acts as a reducing agent and is oxidized to sulfate (SO₄²⁻), but the focus here is on the reduction of iodine.
The chemical reaction is:2 K + I2 = 2 KI
The reaction represented by 2K + I2 is a combination or synthesis reaction, where potassium (K) and iodine (I2) combine to form potassium iodide (KI).
In the reaction I2(s) - I2(g), the entropy increases. This is because a solid state (I2(s)) has a more ordered structure compared to the gaseous state (I2(g)), which is characterized by greater molecular motion and disorder. As the solid iodine transitions to gas, the number of accessible microstates increases, leading to a higher entropy. Thus, the process is associated with an increase in randomness and disorder.
The products formed from the reaction between hydrogen iodide and sulfuric acid are hydrogen sulfate (H2SO4) and iodine (I2).
Toward I2(s) production
The equation for the single displacement reaction between bromine and calcium iodide is: Br2 + CaI2 -> 2CaBr2 + I2
The chemical reaction is:2 K + I2 = 2 KI
The balanced equation for the reaction between KI and Cl2 to form KCl and I2 is: 2KI + Cl2 -> 2KCl + I2 This equation is already balanced.
The single replacement reaction between potassium iodide (KI) and chlorine gas (Cl2) would produce potassium chloride (KCl) and iodine (I2) as products. The balanced chemical equation for this reaction is 2KI + Cl2 -> 2KCl + I2.
Yes, the reaction 2I to I2 is endothermic because it requires energy to break the bonds between the I atoms in 2I and form the I2 molecule. This process absorbs heat from the surroundings.
Yes, there is a reaction between lithium iodide (LiI) and chlorine (Cl2). When lithium iodide reacts with chlorine gas, it forms lithium chloride (LiCl) and iodine (I2) as products. This reaction is a redox reaction where lithium is oxidized and chlorine is reduced. The balanced chemical equation for this reaction is 2LiI + Cl2 → 2LiCl + I2.
Any reaction occur between NaCl and and I2.
2NaI(aq)+Br2(l)-->2NaBr(aq)+I2(l) Sodium iodide+bromine-->sodium bromide+iodine
The products of the reaction between KIO3 and Na2S2O5 in the iodine clock reaction are I2, NaIO3, Na2SO4, and H2O. The reaction involves the oxidation of S2O32- by I3- to produce I2, resulting in the color change characteristic of the iodine clock reaction.
The entropy of the system increases during the sublimation of I2(s) to I2(g) because the randomness and disorder of the gas phase is higher compared to the solid phase. Therefore, the entropy of the reaction is positive.
The balanced equation for the reaction between hydrogen gas (H2) and iodine gas (I2) to form hydrogen iodide gas (HI) is: H2 + I2 → 2HI
Sodium + Bromine ----> Sodium bromide2 Na + Br2 ----> 2 NaBr