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Determine the following characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) (1a) The initial pH : (1b) The volume of HI(aq) required to reach the equivalence point : (1c) The pH at the half-neutralization point. (1d)The pH at the equivalence point. do not forget to include units in your answer
A sample of 0.0020 mole of HCl is dissolved in water to make a2000-mL solution. Calculate the molarity of the HCl solution,the [H3O+], and the pH.
When a student chemist transferred the metal to the calorimeter, some water splashed out of the calorimeter. will this technique error result in the specific heat of the metal being reported too high or too low
A NaOH soln of unknown concentration was standardized against KHP. It took 45.78 mL of NaOH soln to completely titrate 1.256 g of KHP. Cal the molarity of NaOH.
A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
During a tritration, 34.62 mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What was the concentration of the original sulfuric acid solution?
When two atoms form a covalently-bonded diatomic molecule, the distance between the nuclei at which the potential energy is at a minimum is called
If 488 g SO2 escaped into the atmosphere and all the escaped SO2 were converted to H2SO4. How many grams of H2SO4 would be produced in the atmosphere?
Ethylene glycol, C2H4(OH)2, is the main component of antifreeze. What mass percentage of ethylene glycol in water must be used to reduce the freezing point of the mixture to -9.34 deg-C? (K_fp for water is -1.86 deg-C/m).
An aqueous solution containing 36.0 g of an unknown molecular (non electrolyte) compound in 159.7 g of water was found to have a freezing point of -1.2 degrees celcius. Calculate the molar mass of the unknown compound.
Calculate the value of deta S when 1.20 mol CH3OH (l) of is vaporized at 64.7 C. The normal boiling point of methanol is 64.7 C, and its molar enthalpy of vaporization is delta H = 71.8 KJ/mol.
At a given temperature,0.0500 mol NO, 0.200 mol Cl2, and 0.550 mol CINO were placed into a 1.00 L container. The equilibrium below was established and 0.250 mol of CINO is present. Determine the equilibruim constant (Kc).
a 50 ml solution containing NaBr was treated with excess AgNo3 to precipitate 0.2146g of AgBr. what is the molarity of NaBr in the solution.
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