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Q1. How H2S can be converted to elemental form of sulphur?
Q2. What is the reaction between sodium sulphite and dilute sulphuric acid? Give balanced equation.
Q3. What is the gas evolved by reaction between sodium sulphite and dilute sulphuric acid? Give ionic equation.
Q4. Give two reactions for dehydration phenomenon.
Q5. Why sulphuric acid is a strong dehydrating agent?
Q6. What is the role played by sulphuric acid which is responsible for the reactions?
Q7. What is oil of vitriol?
Q8. What is the colour change in copper sulphate crystals from hydrated to anhydrous form?
Q9. Give the reaction for removal of water of crystallisation.
Q10. How sugar is mixed with sulphuric acid in the laboratory? Give reaction too.
A buffer solution of pH of 9.25 contains P mol of a weak base and Q mol of a salt of its conjugate acid. When 120 cm3 of a 0.0140 mol.dm-3 solution of hydrochloric acid was added to this buffer solution
at a pressure of 1 atmosphere and a temperature of 25 degc 500 cm3 of the gas hx has a mass of 0.400 g. calculate the
If 25mL of 0.2 M H3PO4 solution is required to neutralize 60mL of a Ba(OH)2 solution then what is the molarity of hte Ba(OH)2 solution
Consider the diffusion of dopant element A into crystalline wafer. The dopant rich coating is considered as a large source of A relevant to the amount of A diffused, so that the surface concentration CAs can be considered a constant.
For the following amino acids, indicate how they might interact to contribute to the tertiary or quaternary structure of a protein. choose from among the following: disulfide bond, salt bridge
Identify the structure of a compound with molecular formula C9H10O2 that exhibits the following spectral data
20 kg of gas burns with 83kg of oxygen produces how much total mass of carbon dioxide and water?
Carbonate buffers are important in regulating the pH of blood at 7.40. If the carbonic acid concentration in a sample of blood is 0.0012 M, determine the bicarbonate ion concentration required
if you burn 10.00g of octane. if the temperature is 500K, and you have an expansion of 1.00 atm, how much work in joule can be done by the system if the octane is completely converted to CO2 and water vapor. what will be the enthalpy change
1. What is the sum of the coefficients when the following is balanced 2. Cryolite is a compound needed for the Hall-Heroult process for aluminum. Cryolite is produced by the following reaction
Calculate the final molarity of acetate anion in the solution. You can assume the volume of the solution doesn't change when the ammonium acetate is dissolved in it.
A sample of methane gas at a pressure of 0.801 atm and a temperature of 26.9oC, occupies a volume of 687 mL. If the gas is allowed to expand at constant temperature until its pressure is 0.438 atm, the volume of the gas sample will be
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