Given below is an experiment, which should be brought out in a laboratory.
Apparatus and ingredients
1 molar NaOH solution; 0.2 molar HCl solution; Phenolphthalein and Methyl Orange; 250 cm3 volumetric flask; titration flask; burette; 25 ml pipette; beakers
Procedure
Measure accurately the mass of a fertilizer sample which weighs 1.00 g approximately using an electronic balance.
Add 25.00 ml of the NaOH solution using the pipette to a beaker. Add the measured portion of the sample to the NaOH solution. Warm it thoroughly and stir it using a glass rod.
After warming the solution for about a half an hour, let it to be cool and add it to the volumetric flask. Wash the beaker using distilled water and add it too to the flask, and then dilute it till 250 cm3.
Take a portion of 25 ml from the flask from the pipette to the titration flask. Add phenolphthalein as the indicator and titrate it against the HCl solution. Observe and record the end point.
Next, add few drops of methyl orange to the titration flask with the same solution and continue the titration. Record the end point.
Theory and calculations
The reactions involving are;
CO(NH2)2 + 2NaOH --> Na2CO3 + 2NH3 --- (1)
NaOH + HCl --> NaCl + H2O --- (2)
Na2CO3 + HCl --> NaHCO3 + NaCl ---(3)
NaHCO3 + HCl --> NaCl + H2O + CO2 ---(4)
where the first three reactions occur during the first titration.
Suppose the two burette readings are V1 and V2 respectively. Then the HCl involved in the last reaction is given by V1 - V2. Hence, we can find the number of NaHCO3 moles involved in the second titration, which is equivalent to the moles of Na2CO3 in reaction (3). Finally moles of sodium carbonate is equal to half the moles of N atom moles present in urea. By multiplying the moles of N atoms by its molar mass, the weight of N present in the 25 ml can be calculated.
Now, if a mass m is there in 25 ml, we can calculate the mass of N atoms dissolved in 250 ml in the volumetric flask.
By now, we know the entire mass of the examined sample and the mass of the nitrogen content, so the percentage can be calculated.
Advantages of using urea: it is a cost-effective source of nitrogen fertilizer, has high nitrogen content, and is readily available for plants to absorb. Disadvantages of using urea: it can volatilize if not properly applied or incorporated into the soil, may cause nitrogen burn if applied in excess, and can contribute to water pollution through leaching.
No, urea and ammonium nitrate are not the same. Urea is a nitrogen-containing compound that is commonly used as a fertilizer. Ammonium nitrate is also a nitrogen-containing compound, but it is a different chemical compound used as an explosive or fertilizer.
Two common sources of nitrogen fertilizer are urea, which is a synthetic organic compound, and ammonium nitrate, which is a chemical compound made of ammonia and nitric acid.
Yes, urea is produced from ammonia in a process called the Haber-Bosch process. In this process, ammonia is combined with carbon dioxide to produce urea, which is a common nitrogen-containing fertilizer.
Urea is typically 45-46% nitrogen.
Advantages of using urea: it is a cost-effective source of nitrogen fertilizer, has high nitrogen content, and is readily available for plants to absorb. Disadvantages of using urea: it can volatilize if not properly applied or incorporated into the soil, may cause nitrogen burn if applied in excess, and can contribute to water pollution through leaching.
the urea is better because it has an affordable price for farmers, it has 48% nitrogen if I am not mistaken. also as fertilizer, has high solubility.
The average weight of a cubic foot of nitrogen 46-0-0 (urea) is approximately 52 to 54 pounds. This weight can vary slightly based on factors such as moisture content and the specific formulation of the fertilizer. Urea is commonly used as a nitrogen source in fertilizers due to its high nitrogen content.
No, urea and ammonium nitrate are not the same. Urea is a nitrogen-containing compound that is commonly used as a fertilizer. Ammonium nitrate is also a nitrogen-containing compound, but it is a different chemical compound used as an explosive or fertilizer.
organic nitrogen fertilizer
The weight of 1 cubic foot of urea fertilizer typically ranges from about 40 to 50 pounds, depending on factors such as moisture content and granule size. Urea is a solid nitrogen fertilizer, and its density can vary slightly based on the specific formulation and conditions. For precise applications, it's best to check the product specifications provided by the manufacturer.
The product call the 'King of Fertilizers' is urea fertilizer, an inexpensive form of nitrogen fertilizer.
Complete or urea fertilizers tend to be the fertilizers for abacá (Musa textilis).Specifically, a complete fertilizer contains the three macronutrients needed for healthy plant growth. It also is called NPK fertilizer, in honor of the macronutrients nitrogen, phosphorus and potassium. Nitrogen also is strong in urea, which is a popular choice for a nitrogen-release fertilizer.
Two common sources of nitrogen fertilizer are urea, which is a synthetic organic compound, and ammonium nitrate, which is a chemical compound made of ammonia and nitric acid.
Nitrogen fertilizer typically appears as a white or off-white granule or crystal, often coated with a colorant to indicate its nitrogen content. Common forms include urea, ammonium nitrate, and ammonium sulfate, which are usually colorless or slightly yellowish. However, the actual appearance can vary depending on the specific formulation and any additives used in the product.
Among nitrogenous fertilizers, ammonium sulfate (N2H8O4S) typically supplies a high amount of nitrogen by weight, providing around 21% nitrogen. In comparison, other nitrogen sources like urea (46% nitrogen) offer higher nitrogen content but may not be categorized under the NPK (Nitrogen, Phosphorus, Potassium) classification. The nitrogen ion itself is not a fertilizer but rather a component of various fertilizers. Therefore, when considering weight percent of nitrogen supplied, ammonium sulfate is significant, but urea offers the highest nitrogen content by weight.
Yes, urea is produced from ammonia in a process called the Haber-Bosch process. In this process, ammonia is combined with carbon dioxide to produce urea, which is a common nitrogen-containing fertilizer.