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Q1. Which is the gas evolved when ammonium chloride reacts with calcium hydroxide?
Q2. What happens when lead(II) nitrate crystals are heated?
Q3. Why nitric acid stored in reagent bottle for long time show colour change?
Q4. Explain the laboratory synthesis of Nitric acid in detail and what are the reagents used to prepare it?
Q5. Which gases are evolved when lead nitrate crystals are heated?
Q6. What are the conditions for decomposition of Nitric acid or HNO3?
Q7. What is the product of reaction of barium chloride with hydrochloric acid?
Q8. What is the product of reaction of barium chloride with sulfuric acid and what type of reaction is this?
Q9. Give the Molecular Equation of barium chloride with sulphuric acid.
Q10. Give the Ionic Equation for precipitation of BaSO4.
Calculate the amount of heat evolved in the oxidation of 32.0 g of Fe (Ar = 55.85 g/mol) at 25 oC and 1 atm pressure ( ?Hfo(Fe2O 3,s) = -824kJ/mol)
The mole fraction of potassium nitrate in an aqueous solution is .0194. The density of the the solution is 1.0627 g/mL. Calculate the molarity of the solution.
How many mL of .100 M KCI(aq) are required to react completely with 4.325 g of solid Pb(NO3) to form PbCl2?
The wind speed is 4.8 m/s on a slightly sunny morning and plume rise is 20 m. (a) Calculate the ground-level centerline concentration 2.0 km downwind from the stack. (b) Calculate the concentration at 100 m off the centerline at the same x distanc..
Calculate the solubility of zinc hydroxide, Zn(OH)2, in 1.00 M NaOH. Ksp = 3.0 × 10-16 for Zn(OH)2, Kf = 3.0 × 1015 for Zn(OH)42-
A sample of nitrogen gas in a 4.4-L container at a temperature of 35°C exerts a pressure of 3.7 atm. Calculate the number of moles of gas in the sample.
Obtain an expression for G associated with the movement of 4 H+ from a region of higher concentration outside the membrane to one of lower concentration inside.
Assuming complete dissociation and ideal behavior, what would be the boiling point of an aqueous solution of MgCl2 that is 8.0% MgCl2 by mass? For H2O
Calculate ?Grxn at 298 K under the conditions shown below for the following reaction. SO3(g) + H2O(g) ? H2SO4(l) ?G°= -90.5 kJ P(SO3) = 0.20 atm, P(H2O) = 0.88 atm
Titrate 80ml of NH3 w/35ml of 0.30M HCl. Find pH and select an indicator beside bromocresol green that can be used.
Explain the Vapor pressure of pure benzene is 74.7Torr and that for pure toluene is 23.3Torr. Explain the mole fraction of each in the VAPOR phase if there are 3.12moles of benzene as well as 1.25 moles of toluene
Suppose your lab instructor inadvertently gave you a sample of KHP contaminated with NaCl to use in standardizing your NaOH. How would this affect the molarity you calculated for your NaOH solution
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