A classmate of yours, an inexperienced Winemaker in a small but very friendly landlocked Balkan country, asks for your advice on SO2. She has a Vranec with the characteristics below and is finished MLF. She knows that to protect the wine from microbial assault she should maintain a MSO2 of at least 0.80 mg/L. Volume 3,648 L pH 3.24 SO2 free 24 mg/L SO2 total 89 mg/L Ethanol 12.6 % She has access to high pressure, 95% pure SO2 liquid that has a density of 1.42 g/100ml. How many mL of the SO2 do you advise her to add? Show all work, units and assumptions. ***We have been using this equation to look at SO2 levels/relationships: MSO2 mg/L = FSO2mg/L / (1 + 10^(pH-1/81))
Catalysis and Enzymatic Reactions
Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.
Lock And Key Model
The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.
Question:
- A classmate of yours, an inexperienced Winemaker in a small but very friendly landlocked Balkan country, asks for your advice on SO2. She has a Vranec with the characteristics below and is finished MLF. She knows that to protect the wine from microbial assault she should maintain a MSO2 of at least 0.80 mg/L.
| Volume | 3,648 | L |
| pH | 3.24 | |
| SO2 free | 24 | mg/L |
| SO2 total | 89 | mg/L |
| Ethanol | 12.6 | % |
She has access to high pressure, 95% pure SO2 liquid that has a density of 1.42 g/100ml. How many mL of the SO2 do you advise her to add? Show all work, units and assumptions.
***We have been using this equation to look at SO2 levels/relationships:
MSO2 mg/L = FSO2mg/L / (1 + 10^(pH-1/81))
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