Oxygen limiting reactant

For simulation on the IBM 360/65 computer, the reaction was represented as first order to oxygen, the limiting reactant, and by the usual Arrhenius form dependency on temperature. Since the changes here were rapid, various transport processes had significant roles. The following set of differential equations was used to describe the transient system ... 

A 20 m3 working volume of a bioreactor is used for producting penicillin. What would be the sugar concentration (S0) you choose if oxygen transfer rate is not the limiting reactant Given data ... 

A 20 m3 working volume of bioreactor is used for production of penicillin. What is the initial substrate concentration, S0, that you choose when there is a limitation in sufficient oxygen transfer rate and there are no limiting reactants ... 

M.8 In the reaction of hydrogen gas (H,) and oxygen gas (O,) to form water vapor, which is the limiting reactant in each situation What is the maximum quantity of water vapor that can be produced in each case Report your answer using the units in parentheses, (a) 1.0 g of hydrogen gas and 0.25 mol 02(g) (in moles of H,0) (b) 100 H, molecules and 40 02 molecules (in H20 molecules). 

You should verify that if ammonia is selected as the limiting reactant, the amounts table will have a negative amount of oxygen at the end of the reaction. A negative final amount is impossible. 

The catal5dic behavior in propane ammoxidation of Sb V=1.0 and 3.0 is summarized in Fig. 1. The tests were carried out using a propane concentration of about 8% and oxygen as the limiting reactant, because these experimental con-dit-ions agree with those indicated as preferable in the patent literature [12] and from the analysis of the reaction kinetics [9,10]. 

Hydrocarbon-rich conditions imply that oxygen is the limiting reactant, due to the high oxygen-to-hydrocarbon stoichiometric ratio in n-hexane ammoxidation. Therefore, the conversion of the hydrocarbon is low this should favour, in principle, the selectivity to products of partial (amm)oxidation instead of that to combustion products. 

M.3 The souring of wine occurs when ethanol, C2HsOH, is converted by oxidation into acetic acid C2HsOH(aq) + 02(g) -> CH3COOH(aq) + HzO(l). If 2.00 g of ethanol and 1.00 g of oxygen were sealed in a wine botde, which would be the limiting reactant for the oxidation ... 

All substances are gases under the experimental conditions. The number of moles of oxygen required is half the number of moles of sulfur dioxide but this experiment had 0.0259 mol 02, which was less than half of the mol S02 (0.0550 mol S02). This means that the oxygen is a limiting reactant and there is an excess of sulfur dioxide. The calculation of the 02 is first, then that of the S02 used. 

While the individual reaction rates are the variables that, can be affected in a reacting system, we often express the performance of the reactor in terms of measures derived from the rates. Conversion and yield are such quantities. Conversion refers to the fractional consumption of a reactant in the reactor feed, whereas yield refers to the amount of product made relative to the amount of a key reactant fed to the reactor. In recycle systems the per-pass conversion of the various reactants is a relevant measure. It depends upon the rate of reaction for the specific component but also on the reactor feed. The per-pass conversion of an excess reactant is less than that of a limiting reactant. For example, the per-pass conversion of ethylene in a typical vinyl acetate reactor is only 7 percent whereas the per-pass conversion of oxygen is 36 percent. In Chap. 2 we discussed the plantwide control implications of incomplete conversion. 

The vinyl acetate process is described in Chap. 11. The reactor inlet temperature is 148.5 C and oxygen is the limiting reactant (yA0 = 0.075). The heat of reaction is -42.1 kcal/mol vinyl acetate or -84.2 kcal/mol oxygen. The average heat capacity of the feed is computed from data provided in Chap. 11 ... 

Identify the limiting reactant and how much carbon dioxide gas can be produced when 15.2 g of methane react with 18.5 g of oxygen gas to produce water and carbon dioxide. 

In this case, SO2 is the limiting reactant because the computation based on its amount produces the smallest amount of product (6.24 mol H2SO4). Oxygen and water are present in excess. After reaction, the amount of each reactant that remains is the original amount minus the amount reacted ... 

C. The oxygen is the limiting reactant because there is more than twice as much magnesium than oxygen. 

C. The magnesium is the limiting reactant because you would need 2(0.875) = 1.75 moles of magnesium to react completely with the 0.875 moles of oxygen. We have less than that. 

Conversely, the presence of adsorbed °f HClOJ ions is expected to further hinder the adsorption of the rate-limiting oxygen-containing reactant, further poisoning the reaction, as also experimentally observed [117]. 

The formation of CO, H2, carbon, H2O, CO2 may be expressed according to the above mechanism. Thus, at high ratios of R, adsorbed oxygen will be the limiting reactant and thus carbon deposition is achieved according to the following reaction ... 

If one starts out with 1 mol of methane and 3 mol of oxygen in a reaction vessel, only 2 mol of oxygen would be used up, leaving an excess of 1 mol. In this case, the oxygen is called the excess reactant and methane is the limiting reactant. The limiting reactant is defined as the reactant that would be completely consumed if the... 

We burn 15.00 L of ammonia in 20.00 L of oxygen at 500.°C. What volume of nitric oxide, NO, gas can form What volume of steam, H20(g), is formed Assume all gases are at the same temperature and pressure, and that the limiting reactant is used up. 

A 5.00-L reaction vessel contains hydrogen at a partial pressure of 0.588 atm and oxygen gas at a partial pressure of 0.302 atm. Which element is the limiting reactant in the following reaction ... 

You have 20.0 g of elemental sulfur, Sg, and 160. g of O2. Which is the limiting reactant in the combustion of Sg in oxygen to give SO2 gas What amount of which reactant (in moles) is left after complete reaction What mass of SO2, in grams, is formed in the complete reaction Hint Remember first to write the balanced chemical equation for the reaction.)... 

In one of a series of reactions used to produce nitric acid, ammonia gas and oxygen gas react to form nitrogen monoxide gas and water vapor. Write a balanced equation for this reaction. If 30 trillion ammonia molecules and 35 trillion oxygen molecules are available to react, which is the limiting reactant ... 

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