Chemical Reactions
Combustion reaction which occurs when a hudrocarbon reaczts with oxygen gas to create carbon dioxide and water.
Idenify the type of reaction: C2H6 + O2 = CO2 + H2O
H2/O2 = 2 mol H2/1 mol O2
What is the molar ratio of H2/O2 in equation: 2 H2 +O2 ---> 2 H2O
A solution is a mixture of two or more substances; a homogenous mixture.
What is a solution and what type of mixture is it?
Some properties for acid is that it has a sour taste, a proton donor, has pH less than 7, neutralizes base, and produce H+ ion. Some properties for base is that it has a bitter taste, a proton acceptor, has pH greater than 7, neutralizes acid, and produces OH- ion.
What are some properties of an acid and base?
Single replacement reaction and Double replacement reaction
What are the two replacement reaction?
C6H6 and O2: reactant
H2O and CO2: product
Identify the reactant and product: C6H6 + O2 = H2O +CO2
1 mole of hydrogen is 6.02 x 1023 atoms of a hydrogen.
What is 1 mole of hydrogen?
water = solvent
lemonade particle = solute
Identify the solvent and solute in a lemonade mixture.
Acid: HCl, H3PO4, HNO3, HI
Base: NaOH, Ca(OH)2, Mg(OH)2, KOH
What are examples of an acid and base?
One mole of a compound contains a Avogadro's number, which is 6.022 x 1023 of molecules or a formula unit.
What does one mole of a compound contain?
Decomposition reaction is the opposite of synthesis reaction that occurs when compounds break into simpler compounds.
What is a decomposition reaction?
There are 50 moles of iron.
How many moles of iron are made from 25 moles of Fe2O3 in equation: Fe2O3 + 3 H2 ---> 2 Fe + 3 H2O
The molarity is: 0.25 M
What is the molarity of the solution that contains 29.25 g of NaCl dissolved in 2.0 L of Solution.
A conjugate acid-base pair consist two ions or molecules thats related by loss or gain of one hydrogen ion.
What is a conjugate acid-base pair?
mole: mol
molar mass: g/mol
What is the unit for mole and molar mass?
Al: 1, C: 3, O: 6
Identify the amount of atoms: Al(CO2)3
A mole indicates the number of atoms, ions, molecules, or formula unit.
What is a mole?
Concentrated - a solution that has a relatively large amount of dissolved solute.
Dilute - a solution that has a relatively small amount of dissolved solute.
What is concentrated and dilute?
pH = -log[H3O+] ----> pH = -log(1.0 x 10-4) = 4
What is the pH of the solution that has a [H3O+] = 1.0 x 10-4 M?
0.00075 mol NaCl
What is the number of moles of NaCl in 0.500 mL in 1.5 M solution.
Single replacement
SeCl6 + O2 ---> SeO2 + 3 Cl2
Balance the equation and identify the type of reaaction: SeCl6 + O2 ---> SeO2 + Cl2
Fe- 2 x 55.8 = 111.6, O- 2 x 16.0 = 32
Molar Mass = 111.6 + 32 = 143.6g/mol
What is the Molar Mass for Fe2O2?
Unsaturated is when all the solute is dissolved. Saturated is when it can't dissolve anymore solute. Supersaturated is when it contain more solute than it can dissolve.
What is unsaturated, saturated, and supersaturated?
[H3O+] x [OH-] = 1.0 x 10-14 ---> [H3O+] x 2.3 x 10-3 = 1.0 x 10-14 ----> [H3O+] = 1.0 x 10-14 / 2.3 x 10-3 = 4.3 x 10-12 M
What is the [H3O+] of the solution when the [OH-] = 2.3 x 10-3 M?
Conjugate acid- the ion or molecule formed when a base gains a hydrogen ion.
Conjugate base- the ion or molecule that remains after an acid donates a hydrogen ion.
What is a conjugate acid and a conjugate base?