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In a batch process, the reaction takes place in the presence of an acid medium. The acid is drained from the reaction vessel at the rate of 15ml/s as a result of the density difference of the acid from the reacting component. To avoid wastage of acid, it is recycled to an acid tank which has 1000 L capacity. The acid drained from the reaction vessel, picks up 50 g/L solids from the reactor. Acid is fed once again to the process from acid tank. When the process is started, the acid is almost pure in the tank as a result of filtration. As the reaction proceeds, acid in the tank gets more and more contaminated with the solids. The concentration of the solids should not exceed 100 g/L from the process point of view. The batch time is 16h. Estimate whether the concentration of the solids will exceed 100g/L during the batch reaction.
Consider following data for bulk polymerization, with benzoyl peroxide as initiator. = 6 mol/m3 = 6.56*103 mol/m3 kp2/kt = 1.5*10-6 m3/ mol-s What is the initiator efficiency if initial rate of polymerization is 0.0256 m3/ mol-s benzoyl peroxide decomposes at a rate of 3.2* 10-6 m3/ mol-s-1?
What is the theoretical yield of ethyl ethanoate when 100 grams of ethanoic acid is reacted with 100 grams of ethyl alcohol?
Measurement of KLa in a bioreactor can be carried out by sodium sulfite oxidation method, that is, based on the oxidation of sodium sulfite to sodium sulfate in the presence of a catalyst (Cu++ or Co++). In a typical experiment, a laboratory fermenter was filled with 5 liter of 0.5 M sodium sulfite solution containing 0.003 M Cu++ ions and the air was sparged in. After 10 min, the air flow was stopped and a 10 mL sample was taken and titrated. The concentration of sodium sulfite in the sample was found to be 0.20 M. The oxygen uptake rate for this aerated system will work out to be
What is the pH of a solution prepared by dissolving 0.1665 mole of hypochlorous acid (HClO) in enough water to make 500 mL of solution? The Ka is 3.0 × 10-4
A word arrangement machine, When given an input line of words, rearranges it in every step following a certain rule. Following is an illustration of an input line of words and various steps of rearrangement.
Input: gone are take enough brought station
Step 1: take gone are enough brought station
Step 2: take are gone enough brought station
Step 3: take are station gone enough brought
Step 4: take are station brought gone enough
And Step 4 is the last step for this input. Now, find out an appropriate step in the following question following the above rule. Question:
Input: car on star quick demand fat
What will be the third step for this input ?
A solution is prepared by dissolving 30.0 grams of Ni(NO3)2 in enough water to make 250 mL of solution. What is the molarity of this solution?
1000 K তাপমাত্রায় একটি আবদ্ধ পাত্রে নাইট্রোজেন বিক্রিয়া সাম্যাবস্থা আসার পর N₂ এর ঘনমাত্রা 3.0 mol/L এবং H₂ এর ঘনমাত্রা 0.1 mol/L হলে NH₃ এর ঘনমাত্রা কত mol/L ? [kc=3×10⁻³ mol⁻²L²]
একটি প্রথম ক্রম বিক্রিয়ায় বিক্রিয়কের ঘণমাত্রা 1 mol / L থেকে 60 sec . এ 0.5 mol /L নেমে আসে। যদি বিক্রিয়কের প্রাথমিক ঘণমাত্রা 20 mol /L হয় তাকে 5 mol /L এ আসতে কত সেকেন্ড সময় লাগবে?
একটি প্রথম ক্রম বিক্রিয়ার ঘনমাত্রা 60 সেকেন্ডে 1.0 mol/L থেকে 0.5 mol/L এ নেমে আসে। বিক্রিয়াটির ঘনমাত্রা 2.0 mol/L থেকে 0.5 mol/L এ নেমে আসতে কত সেকেন্ড সময় লাগবে?