General Chemistry Answers

ICI(g) + H2(g)

Give the complete ionic equation for the reaction (if any) that occurs when aqueous                        solutions of H2SO4 and KOH are mixed.

           A) H+(aq) + OH-(aq) → H2O(l)

           B) 2 K+(aq) + SO42-(aq)  → K2SO4(s)

           C) 2 H+(aq) + 2 OH-(aq) + 2 K+(aq) + SO42-(aq) → 2 H2O(l) + 2 K+(aq) + SO42-(aq)

           D) 2 H+(aq) + 2 OH-(aq) + 2 K+(aq) + SO42-(aq) → 2 H+(aq) + 2 OH-(aq) + K2SO4(s)

           E) No reaction occurs.

1) Choose the statement below that is TRUE.

A) A weak acid solution consists of mostly ionized acid molecules.

B) The term "strong electrolyte" means that the substance is an acid.

C) A strong acid solution consists of essentially all ions and conducts current efficiently.

D) The term "weak electrolyte" means that the substance is inert.

E) A molecular compound that does not ionize in solution is considered a strong

    electrolyte.

A gas has a volume of 3.0 L at 330K. What will its

volume be at 373K?

The gases in a hair spray can are at a temperature

of 27 °C and a pressure of 207 kPa. If the gases inside

the can reach 400 kPa, the can will explode. At what

temperature would the can explode?

For a titration of 20 mL of 0.80M formic acid (K_a = 3.7 x 10^-4, values are made up), with NaOH (0.80M), the pH of the solutions at half Equivalence point and at the Equivalence point are:

Sketch a heating/cooling curve for water, starting with ice at 0°C and ending with steam at 105 Celsius be sure to label all the phases, Changes and temperatures

Determine the molarity of a solution formed by dissolving 3.00 moles of NaCl in                    enough water to yield 4.00 L of solution.

                       A) 1.33 M

                       B) 2.00 M

                       C) 0.750 M

                       D) 3.00 M

                       E) 12.00 M

If 54.0% of a compound decomposes in 175 minutes via a first-order process, what is the half-life(in hours) of the unknown compound ?

How much energy is given off by the follwing reaction if 162.5g of oxgen reacts with 216.7g of Ammonia(NH3)?

4NH3+ 5O2-->4NO+H20

H=-1225.6Kj