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What volume, in L, of a 0.00945-M solution of potassium hydroxide would be required to titrate 50.00 mL of a sample of acid rain with a H2SO4concentration of 0.000123 M.
H2SO4(aq) + 2KOH(aq) --> K2SO4(aq) + 2H2O(l)
Calculate the concentration (in molarity) of a Ba(OH)2 solution if 25.0 mL of the solution are needed to neutralize 20.0 mL of a 0.500 M HCl solution
Magnetite is a binary compound containing only iron and oxygen. The percent by weight, of iron is 72.360%. What is the empirical formula of magnetite
For the endothermic equilibrium CaCO3(s) + NH4+(aq) + SO42+(aq) -> CaSO4(s) + NH3(g) + HCO3-(aq), explain the best set of changes to apply in order to increase product yield effectively.
1 mole equivalents of sodium hydroxide ( 2 mol dm^-3 solution) will be required to form the phospharane (ph3p=CHCOOEt) from the phosphonium salt (Ph3P+CH2COOEt Br-) . what volume of sodium hydroxide solution needs to be added
Palmitic acid C_16 H_32 O_2 is a dietary fat found in beef and butter. The caloric content of palmitic acid is typical of fats in general. 1. What is the caloric content of sucrose in Cal/g? Delta Hrxn is: -5640 kJ
The first step in the citric acid cycle of food metabolism is reaction of oxaloacetate with acetyl CoA to give citrate. Propose a mechanism, using acid or base catalysis as needed. Oxaloacetate + Acetyl CoA ----> Citrate
it took 35.40mL of 0.100 M NaOH to titrate a 2.55 gram of a weak acid to the equivalence point. The pH when 17.7mL of the NaOH had been added was 6.2. What was the Ka for the acid
The solubility of calcium hydroxide in water at 25 Degrees is 150mg of calcium hydroxide per 100ml (ie 150mg remains dissolved in water and didnt precipitate out). Taking this into account in the above gravimetric analysis experiment; recalculate ..
A gas cylinder that contains argon has an internal volume of 6.88 L. A pressure gauge attached to the cylinder reads 1870 psi (1 atm = 14.7psi) at 20.0C.
It required 22.7mL of HCl to reach the orange-red end point. Calculate the molar solubility and Ksp of calcium hydroxide.
Describe the reaction as endothermic or exothermic, and reversible or irreversible. B) A reaction has Horxn = 5.0 kJ/mol and a forward activation energy, Ea = 55 kJ/mol. What is the activation energy for the reverse reaction?
The solution density = 1.013 g/mL and suppose that the density of pure water =1.00 g/mL. Determine the molality of this solution?
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