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Aqueous solutions of phosphoric acid and sodium nitrite are combined, and the following equilibrium is established. H3PO4 (aq) + NO2- (aq) =
H2PO4-(aq) + HNO2 (aq)
The equilibrium constant Kc for this reaction is greater than one. Based on this information, which of the following statements is correct?
a. Phosphoric acid is a weaker acid than nitrous acid.
b. Nitrous acid is a weaker acid than water.
c. The nitrite anion is a wesker base than the dihydrogen phosphate anion.
e. Phosphoric acid is a stronger acid than nitrous acid.
What mass of carbon dioxide (in kg) is produced upon the complete combustion of a typical tank of propane containi 18.9 L. The density of the propane is 0.621 g/ mL Hint: begin by writing a balanced rquation for the combustion reaction.
The temperature of a sample of water increases from 21.9°C to 45.3°C as it absorbs 5669 J of heat. What is the mass of the sample.
The reaction, seen below, is carried out in a constant-volume flask. Initially only dimethyl ether is present and the pressure is 0.350 atm. What is the pressure of the system after 8.0 minutes? Assume ideal behavior.
1.00 mol of phosphorus reacted with excess fluorine: P4 + 6F2 -> 4PF3 Calculate the number of moles of PF3 produced, assuming the reaction went to completion
The volume of a cylinder in an auto is 0.44L. the cylinder is filled with a gasoline and air mixture at 1.0 atm and then is compressed to 0.073L prior to ignition.
What is the molarity of a solution which contains 58.5g of sodium chloride dissolved in 0.500 L of solution?
Mole fraction of MgCl2 in an aqueous solution prepared by dissolving .400 moles of MgCl2 in 850g of water
What mass of HCl gas must be added to 1.00L of a buffer solution that contains [acetic acid]= 2.0M and [acetate]= 1.0M
is believed to follow the mechanism H2O2 + I- ? H2O + IO- fast H2O2 + IO- ? H2O + O2 + I- slow At 25oC, the first step is fast relative to the second step. What is the rate law predicted by this mechanism?
What is the theoretical yield of SO 3 produced by the quantities described in Part A and How many Oxygen molecules are required to react with 7.82g of S?
What generalization can you make about the rotation of a Fischer projection formula in the plane of the paper? Answer a. 90° rotation results in an enantiomer, 180° rotation results in the identical molecule.
A certain compound is made up of three chlorine atoms, one phosphorus atom, and one oxygen atom.
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