Is the Synthesis of Sodium Dithionite Accurate?

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In summary, the conversation discusses two different reactions involving NaHSO3 and Zn, with the first one leading to Na2S2O4 and the second one to ZnSO3. The individual asking for help is unsure which reaction is correct and is looking for more information and conditions for the reactions. There is a reference to a paper from 1929 which may provide more insight.
  • #1
asamaid1
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is the following reaction right?

2 NaHSO3 + Zn → Na2S2O4 + Zn(OH)2

because i tried this reaction but i m not getting any Na2S2O4. I got this reaction in wikipedia. And i found another reaction in the net which is following:

2 NaHSO3 + H2SO3 + Zn ─→ ZnSO3 + Na2S2O4 + 2 H2O

Which one is right? Plz anyone can help me?
 
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  • #2
Have you checked what the document (from which the wikipedia reactions is taken) says about reaction conditions?
 
  • #3
Borek said:
Have you checked what the document (from which the wikipedia reactions is taken) says about reaction conditions?
No condition is stated there. please can u help me with more information. Thanks.
 
  • #4
asamaid1 said:
No condition is stated there. please can u help me with more information. Thanks.

Sorry, I can't help you - but I am rather surprised by your statement. The document I fetched, while incomplete, says a lot about how this reaction is performed.
 
  • #5
Really, where did u get that. I did find some information about the second reaction, but that is confusing. I did not find any information about the first. If u got any information please help me with that. I need that for my project. Thanks.
 
  • #6
Have you checked the references? The equation is listed as coming for a paper published in 1929, and there is a link to this paper.
 

FAQ: Is the Synthesis of Sodium Dithionite Accurate?

1. What is sodium dithionite?

Sodium dithionite, also known as sodium hydrosulfite, is a white crystalline powder that is commonly used as a reducing agent in chemical reactions. It has the chemical formula Na2S2O4 and is a strong reducing agent due to its ability to donate electrons to other substances.

2. How is sodium dithionite synthesized?

Sodium dithionite is typically synthesized by reacting sodium bisulfite (NaHSO3) with sodium hydroxide (NaOH) and sulfur dioxide (SO2). This reaction produces sodium dithionite and water. The process can also be done using sodium sulfide (Na2S) and sulfur trioxide (SO3) as starting materials.

3. What are the uses of sodium dithionite?

Sodium dithionite has a wide range of uses in various industries. It is commonly used as a bleaching agent in the textile industry, as a reducing agent in the production of chemicals and pharmaceuticals, and as a stabilizer in the production of polymers and plastics. It is also used in the pulp and paper industry, water treatment, and as a food additive for preserving the color of food products.

4. Is sodium dithionite safe to handle?

Sodium dithionite is considered safe to handle when proper precautions are taken. It is a strong reducing agent and can cause skin and eye irritation, so it is important to wear protective gear such as gloves and goggles when handling it. It should also be stored in a cool, dry place away from heat sources and incompatible substances.

5. What are the potential hazards of sodium dithionite?

Sodium dithionite poses several potential hazards, including skin and eye irritation, respiratory irritation if inhaled, and potential environmental hazards if released into water or soil. It is also a flammable substance and can react violently with certain chemicals, such as strong acids. It is important to follow proper safety protocols when handling and storing sodium dithionite to avoid these potential hazards.

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