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What you add firstly in carbohydrate solution either H2SO4 or 1-naphthol?
1-naphthol is added first to a carbohydrate solution to detect the presence of carbohydrates. Then, sulfuric acid (H2SO4) can be added to the solution to further test for specific carbohydrates based on color changes or precipitation.
How do you prepare 0.5 N sulphuric acid?
To prepare 0.5 N sulfuric acid, you can mix 49 g of sulfuric acid (H2SO4) into enough water to make 1 liter of solution. This will give you a solution that has a concentration of 0.5 N, meaning it contains 0.5 moles of H2SO4 per liter of solution. Remember to always add acid to water slowly while stirring to avoid splashing and to ensure a safe preparation process.
How do you dilute a 10 M H2SO4 to 1M H2SO4?
To dilute 10 M H2SO4 to 1 M H2SO4, you would need to add 9 parts of water for every 1 part of the 10 M H2SO4 solution. For example, if you have 10 mL of 10 M H2SO4, you would add 90 mL of water to get 100 mL of 1 M H2SO4 solution. Stir well to ensure thorough mixing.
A biochemist wishes to dilute 75 ml of an aqueous 3.5 M H2SO4 solution to an aqueous 2 M H2SO4 solution. How much water should be added to the solution?
To dilute the 3.5 M H2SO4 solution to 2 M, you need to add water. Use the formula M1V1 = M2V2, where M represents molarity and V represent volume. For this situation, you'll end up adding 75 ml of water to the initial 75 ml of 3.5 M H2SO4 solution to achieve a final 2 M concentration.
How do you prepare an aqueous 3.0 M solution H2SO4 from crystal H2SO4?
To prepare a 3.0 M solution of H2SO4 from crystal H2SO4, measure out the required amount of crystal H2SO4 based on the molarity and volume you need. Dissolve the crystals in a calculated amount of water to make the desired volume of solution, ensuring proper mixing to obtain a homogeneous solution.
Why we add conc sulphuric acid in mohr salt in the titration of mohr salt against potassium dichromate?
For preparation of standard solution of Mohr salt {FeSO4.(NH4)2SO4.6H2O}, it's necessary to add dilute H2SO4 to prevent the Fe2+ ions of Mohr salt solution from undergoing oxidation (to Fe3+).
How can you prepare saturated solution of CuSO4 at room temperature?
To prepare a saturated solution of CuSO4 at room temperature, add the desired amount of CuSO4 to distilled water in a clean container. Stir the solution until no more CuSO4 dissolves, indicating saturation. Allow any undissolved CuSO4 to settle at the bottom before using the clear saturated solution.
Is there an ion exchange when you add CuSO4 to NaCl?
No, there is no ion exchange reaction when you add copper(II) sulfate (CuSO4) to sodium chloride (NaCl). The ions present in the solution will remain as Cu2+, SO4 2-, Na+, and Cl-.
How do you make the salt copper sulphate from copper carbonate and sulphuric acid?
CuCO3 + H2SO4 --> CuSO4 + CO2 + H2O As this reaction shows just add copper carbonate crystals to a solution of sulfuric acid of diluted concentration. Carbon dioxide should efferves from this solution. I can not remember if the copper sulfate precipitates here, or is in ionized form.
What you add firstly in carbohydrate solution either H2SO4 or 1-naphthol?
1-naphthol is added first to a carbohydrate solution to detect the presence of carbohydrates. Then, sulfuric acid (H2SO4) can be added to the solution to further test for specific carbohydrates based on color changes or precipitation.
How do you prepare 0.5 N sulphuric acid?
To prepare 0.5 N sulfuric acid, you can mix 49 g of sulfuric acid (H2SO4) into enough water to make 1 liter of solution. This will give you a solution that has a concentration of 0.5 N, meaning it contains 0.5 moles of H2SO4 per liter of solution. Remember to always add acid to water slowly while stirring to avoid splashing and to ensure a safe preparation process.
How do you dilute a 10 M H2SO4 to 1M H2SO4?
To dilute 10 M H2SO4 to 1 M H2SO4, you would need to add 9 parts of water for every 1 part of the 10 M H2SO4 solution. For example, if you have 10 mL of 10 M H2SO4, you would add 90 mL of water to get 100 mL of 1 M H2SO4 solution. Stir well to ensure thorough mixing.
A biochemist wishes to dilute 75 ml of an aqueous 3.5 M H2SO4 solution to an aqueous 2 M H2SO4 solution. How much water should be added to the solution?
To dilute the 3.5 M H2SO4 solution to 2 M, you need to add water. Use the formula M1V1 = M2V2, where M represents molarity and V represent volume. For this situation, you'll end up adding 75 ml of water to the initial 75 ml of 3.5 M H2SO4 solution to achieve a final 2 M concentration.
How do you prepare an aqueous 3.0 M solution H2SO4 from crystal H2SO4?
To prepare a 3.0 M solution of H2SO4 from crystal H2SO4, measure out the required amount of crystal H2SO4 based on the molarity and volume you need. Dissolve the crystals in a calculated amount of water to make the desired volume of solution, ensuring proper mixing to obtain a homogeneous solution.
What color will the solution be if you add H2SO4 to the K2CrO4 solution?
When sulfuric acid (H2SO4) is added to a potassium chromate (K2CrO4) solution, the orange-yellow color of the chromate ions will change to red, due to the formation of chromium ions in the +6 oxidation state (CrO4^2- --> Cr2O7^2-).
How do you prepare 10mM CuSO4 alkaline solution?
To prepare a 10mM CuSO4 alkaline solution, first, dissolve the appropriate amount of CuSO4 in water to make a 10mM solution. Then, adjust the pH of the solution to become alkaline by adding a base such as sodium hydroxide (NaOH) or potassium hydroxide (KOH) until the desired pH is achieved. Be sure to use proper safety precautions when handling chemicals.
How do you prepare the 1.25 percent H2SO4 solution?
To prepare a 1.25% sulfuric acid (H2SO4) solution, you would mix 1.25 grams of sulfuric acid with 100 mL of water. This would give you a solution where the mass of sulfuric acid is 1.25% of the total solution mass. Be sure to carefully add the acid to the water to prevent splattering or spilling.
