Inorganic Chemistry Topics

Calculate ΔH for the following reactions using bond enthalpies a. 2CO(g) + O2(g) →→2CO2(g) b. C₂H2(g) + H2(g) → C₂H4(g) c. 4NH3(g) + 5O2(g) →→ 4NO(g) + 6H₂O(g) d. Br2(g) + CH4(g) → CH3Br(g) + HBr(g)

A metal cylinder with a fixed volume was filled with gas to 4.00 atm pressure at room temperature, 30.0 C. The cylinder was then taken outside on a cold winter day where the temperature was -30.0 C. What is the pressure inside the cylinder?

For the following coordination complex: (Ni(NO₂)₂Br₂)^-2 Give the name Determine the geometry Give the coordination number of the central cation State which type if geometric isomers are present (if none are present, write "none")

What would you need to do to make a 13% solution of sodium chloride (NaCl)? Add 26 g of sodium chloride to a beaker and add water to make a final volume of 200 mL. Add 13 g of sodium chloride to 100 mL of water. Add 13 g of sodium chloride to a beaker and add water to make a final volume of 100 mL. Add 26 g of sodium chloride to 200 mL of water.

Order the atoms in each of the following sets from the least exothermic electron affinity to the most. (Enter multiple answers as acomma-separated list.) a. N, O, F ________ b. Al, Si, P_______

Benzoic acid C6H5COOH has a heat of combustion of -3227kJ/mol. A 1.221g- sample burns in a calorimeter that has a heat capacity of 1365J/°C, and which contains 1.200kg of water. What temperature change is observed in the calorimeter?

When burning ethanol in a closed system, which of the following is the best claim and reasoning? The ethanol reaction stops because a bromthymol blue solution that's present turns the same color as when ethanol vapor is blown into the solution Evaporated ethanol is produced because it burns. Water is produced because a bromthymol blue solution that's present turns the same color as when water vapor is blown into the solution. Carbon dioxide is produced because a bromthymol blue solution that's present tums the same color as when carbon dioxide is blown into the solution. " 1 2 3 4 5 6 8 9 10

A. Boiling Point and Freezing Point • The presence of solute "particles" causes the to become__ • Why does the boiling point of a solution increase? - Forming a_____in a solution in a solution - Solute particles_____molecules trying to enter the bubble

a) [NiH4]²- b) N3 c) Mo(CO) 6 d) PC|3l2 e) SiO44- For each of the molecules selected: Draw the correct molecular geometry, including resonance structures if appropriate. Provide the point group and the main symmetry elements (besides E). Determine the polarity of the molecule and the direction of the dipole.

SO2 reacts with H₂S as follows: 2H2S + SO2 --> 3S + 2H2O When 7.50 g of H2S reacts with 12.75 g of SO2, which statement is true? A. 0.266 moles of SO2 is consumed B. 0.111 moles of SO2 is consumed C. 0.221 moles of SO2 is consumed D.0.442 moles of SO2 is consumed

In the series of Werner complexes (after the German-Swiss chemist) [CoX(NH3)5]n* with X = I™, CI', NH3, there is a color variation from purple (1), through pink (CI) to yellow (NH3). Explain this observation.

A chemist adds 210.0 mL of a 2.68 x 10 M zinc oxalate (ZnC₂04) solution to a reaction flask. Calculate the micromoles of zinc oxalate the chemist has added to the flask. Round your answer to 3 significant digits.

A solution is made by dissolving 28.5 g of ammonium nitrite, NH4NO₂, in enough water to make exactly 250, m of solution. Calculate the molarity of each species: NH4NO₂ NH₂ NO₂

Write the net ionic equation for the following molecular equation. 3CuSO4(aq) + 2(NH4)3PO4(aq) —Cu3(PO4)2(s) + 3(NH4)₂SO4(aq)

Concentrated sulfuric acid (18.3 M) has a density of1.84 g/mL. (a) How many moles of H₂SO4 are in each milliliter of solution? (b) What is the mass % of H₂SO4 in the solution?

In one of his most critical studies on the nature of combustion, Lavoisier heated mercury(II) oxide and isolated elemental mercury and oxygen gas. If40.0 g of mercury(II) oxide is heated in a 502-mL vessel and 20.0% (by mass) decomposes, what is the pressure (in atm) of the oxygen that forms at 25.0°C? (Assume that the gas occupies the entire volume.)