Redox
An element undergoes this process when it gains charge.
Oxidation
The concentration of a solution can be altered in these two ways.
Increasing the amount of solute / decreasing the amount of solvent.
A reaction where a solid mass appears from 2 aqueous solutions is known as this type of reaction.
Precipitate reaction
Increasing the volume of a gas by a factor of 2 and increasing the number of moles by a factor of 4 while keeping the temperature changes this variable by this amount.
pressure doubles
We measure this product when measuring the pressure generated from the decomposition of carbonic acid.
carbon dioxide
Fill in the blank: Iron in an aqueous solution loses an electron. Iron in this scenario is the ______ agent.
Hydrochloric acid, hydrobromic acid, hydroiodic acid, nitric acid, sulfuric acid, and perchloric acid are all known as this type of acid.
Strong acid
This positively charged polyatomic ion is always soluble.
Ammonium
What is the volume of a gas that exerts a pressure of 457 mmHg if it exerted a pressure of 2.50 atm when its volume was 25.0 mL.?
0.104 Liters
Potassium superoxide (KO2) reacts violently with water to produce solid potassium hydroxide and oxygen gas. What would the temperature be if 5.0 g of KO2 reacts to produce a pressure of 1.0 atm and 2.0 L of O2 gas?
460 K
Phosphates are a chemical compound that can be a salt, anion, ester, or functional group derived from phosphoric acid. What is the oxidation number of P in phosphate?
+5
What is the concentration in ppm of a 0.0100 M sodium chloride solution with a density of 1.07 g/mL?
546 ppm
Mixing aqueous solutions of calcium chloride and barium bromide results in this.
No reaction.
A gas mixture has partial pressures of 120 torr N2, 350 torr Ar, and 480 torr SF6. What is the mole fraction of sulfur hexafluoride in the mixture?
0.51
Methane (CH4) undergoes a combustion reaction, producing carbon dioxide and water. After sufficient time has passed, the water condenses. What is volume of CO2 produced if 40.0 grams of methane reacts with 75.0 grams of oxygen gas if the conditions at the time of measuring equal 2.00 atm at 300. K?
14.4 L
For a redox reaction, a permanganate ion reacts with hydrogen peroxide to form manganese (II) and oxygen gas. The half reactions of this redox reaction are:
8H + 5e + MnO4 -> Mn + 4H2O
2H2O2 -> O2 + 1e + 2H2O
10.0 grams of sodium chloride is mixed into 100. mL of water, and 25.0 grams of potassium carbonate is mixed into 150. mL of water. What is the concentration of the more highly concentrated solution?
Potassium carbonate (1.9 M)
Write the full ionic equation for the neutralization of a sodium hydroxide solution and a hydrochloric acid solution.
Na (aq) + OH (aq) + H (aq)+ Cl (aq) -> Na (aq) + Cl (aq) + H2O (l)
A gas exerts a pressure of 500. torr in a 10.0 L container at 280. K. What is the new volume in a 900. torr environment at 300. K?
5.19 L
Hydrogen gas can be produced by reacting many different metals with hydrochloric acid. A 3.00 g sample of metal was reacted with excess hydrochloric acid to produce enough hydrogen gas to generate a pressure of 1.41 atm in a 0.500 L flask at 50.0 C. Which metal was used in the reaction?
Cadmium
In the presence of chromate in acidic conditions, iron(II) produces chromium(III) and iron(III). Balance the reaction.
8H + 3Fe + CrO4 -> 3Fe + Cr + 4H2O
A 50.00 mL sample of calcium hydroxide required 46.78 mL of 0.04498 M hydrochloric acid for complete neutralization. What is the molarity of the original calcium hydroxide solution?
0.02104 M
Write the net ionic equation for the reaction of solid magnesium hydroxide with a solution of hydrosulfuric acid.
Mg(OH)2 (s) + 2H (aq) -> Mg (aq) + 2H2O (l)
What is the identity of a gas inside of a container inside of a container with a density of 0.1786 g/L at 555 mmHg and 199.3 K.
helium
Nitrogen dioxide dimerizes (joins together) to dinitrogen tetroxide. If 2.00 g of nitrogen dioxide is placed in a sealed flexible container at 413 K and 1.00 atm and then cooled to 295 K and 1.00 atm, the dimerization occurs. Assuming ideal gas behavior, what is the new volume (in L) of the container?
0.526 L