Stoichi- ometry States of matter & gas laws Solutions, acids, and bases Reaction rates & equilibrium Miscel- laneous F

Stoichiometry In the reaction: magnesium + oxygen --> magnesium oxide how many moles of oxygen are needed to produce 4 moles of magnesium oxide? Back to the big board

Stoichiometry Calcium and fluorine combine to form calcium fluoride. How many grams of product are formed if 14.5 grams of calcium are reacted with sufficient fluorine? Back to the big board

Stoichiometry What mass of sodium will react completely with 1 liter of chlorine gas at STP? Back to the big board

Stoichiometry Water decomposes to form hydrogen gas and oxygen gas. How many mL of liquid water must decompose to form 33.6L of oxygen gas? Back to the big board

States of matter List the three states of matter in order from most ordered to least ordered. Back to the big board

States of matter How much heat is released when 42 grams of steam at 100°C condenses to water at 100°C? [For steam, H v =2260 J/g] Back to the big board

States of matter Back to the big board

States of matter How much heat is required to change 35 grams of ice at -15°C to water at 45°C? [For ice, H f =334 J/g & c ice =2.1 J/g°C For water, c w =4.18 J/g°C] Back to the big board

Solutions, acids, & bases What is are the concentrations of hydrogen and hydroxide ions in pure water? Back to the big board

Solutions, acids, & bases The phrase “like dissolves like” is often used in describing solutions. What does “like” refer to? Back to the big board

Solutions, acids, & bases How many mL of 0.32M calcium hydroxide are needed to neutralize 10 mL of 0.58M hydrobromic acid? Back to the big board

Solutions, acids, & bases What is the molarity of a copper (II) chloride solution with 18 grams of solute dissolved in 500 mL of solution? Back to the big board

Reaction rates & equilibrium Name three factors that can affect the rate of a chemical reaction. Back to the big board

Reaction rates & equilibrium What is represented by line A on this diagram? Back to the big board A Reaction progress Energy

Reaction rates & equilibrium Name and define two driving forces behind chemical reactions. Back to the big board

Reaction rates & equilibrium H 2 (g) + N 2 (g) 2NH 3 (g) is spontaneous in the fwd direction at low temps. Which way will equilibrium shift if the mixture is heated? Back to the big board

Miscellaneous Define “limiting reactant” Back to the big board

Miscellaneous What chemical force is responsible for water’s high surface tension and high boiling point? Back to the big board

Miscellaneous Define “hygroscopic” Back to the big board

Miscellaneous If enthalpy is negative the reaction is _____. If Gibbs Free Energy is negative the reaction is _____. Back to the big board

Final Jeopardy! STOICHIOMETRY & LIMITING REACTANTS And the answer is...

When 21.8 grams of iron are combined with 10.9L of chlorine gas, how many moles of iron (III) chloride are produced?