Chemical Reaction of So2 - P-Block Elements - Chemistry Class 12

TL;DR

Learn about the various chemical reactions of SO2, including its action with NaOH, Cl2, O2, I2, K2Cr2O7, KMnO4, FeCl3, and H2S.

Transcript

click the bell icon to get latest videos from equator reference in the previous lecture we have discuss about the acidic nature of so2 and now in this topic we are going to talk about the chemical properties of so2 so what are those let me talk about that in this topic so friends in this topic we are going to talk about the chemical properties of s... Read More

Key Insights

• 🫢 SO2 reacts with NaOH to produce sodium sulfite and hydrogen gas.
• ❓ The reaction of SO2 with Cl2 forms sulfuryl chloride.
• ❓ SO2, in the presence of V2O5, yields sulfur trioxide important for the production of sulfuric acid.
• 🧑‍🏭 SO2 acts as a reducing agent in the reaction with I2, converting it to HI and H2SO4.
• ❓ The reaction between SO2 and K2Cr2O7 produces potassium sulfate and chromium sulfate.
• ❓ SO2, when reacting with acidic KMnO4, yields potassium sulfate, manganese sulfate, and sulfuric acid.
• ❓ The reaction of SO2 with FeCl3 produces ferrous chloride, sulfuric acid, and hydrochloric acid.

Questions & Answers

Q: What happens when SO2 reacts with NaOH?

When SO2 reacts with NaOH, it produces sodium sulfite (Na2SO3) and hydrogen gas (H2) as by-products.

Q: What is the result of the reaction between SO2 and Cl2?

When SO2 is treated with Cl2, it forms sulfuryl chloride (SO2Cl2) as a product.

Q: How is sulfur trioxide (SO3) produced from SO2?

SO2 reacts with O2 in the presence of V2O5 to yield two moles of sulfur trioxide (SO3), which is important for the production of sulfuric acid (H2SO4).

Q: How does SO2 act as a reducing agent in the reaction with I2?

When SO2 reacts with I2 in the presence of water, it reduces iodine (I2) to HI and H2SO4, with SO2 acting as a reducing agent.

Summary & Key Takeaways

• SO2 reacts with NaOH to produce sodium sulfite (Na2SO3) and hydrogen gas (H2).

• When treated with Cl2, SO2 forms sulfuryl chloride (SO2Cl2).

• The reaction of SO2 with O2, in the presence of V2O5, produces sulfur trioxide (SO3) important for the production of H2SO4.

• SO2, in the presence of water, reacts with I2 to form HI and H2SO4.

• When oxodized by K2Cr2O7, SO2 produces K2SO4 and Cr2(SO4)3.

• In the presence of acidic KMnO4, SO2 yields K2SO4, MnSO4, and H2SO4.

• SO2 reacts with FeCl3 to produce FeCl2, H2SO4, and HCl gas.

• SO2 acts as both a reducing agent and an oxidizing agent depending on the reactant or condition.