Molarity, Titration, Stoichiometry

Molarity/ Dilutions

100

What is the definition of molarity?

The number of moles of solute per liter of solution 

200

What is the equation used to calculate dilutions?

M₁V₁=M₂V₂ 

300

The molarity of an aqueous solution containing 139 g of glucose (C₆H₁₂O₆) (180.17 g/mol) in 450 mL of solution is ___

1.71 M

400

How many mL of a 0.266 M LiNO₃ solution are required to make 150.0 mL of 0.075 M LiNO₃ solution?

42.3 mL

500

How many grams of KBr are required to make 550.0 mL of a 0.115 M KBr (119.0 g/mol) solution?

7.53 g KBr

Titration

100

Most titrations are what type of reaction?

Acid-base neutralization

200

A titration is complete when you reach the ___ ___.

Equivalence point

300

The ___ goes in the buret (unknown concentration) and the ___ is in the beaker/flask (known concentration)

Titrant 

Analyte 

400

What volume (mL) of 0.0648 M HClO₄(aq) can be neutralized with 125 mL of 0.288 M NaOH(aq)?

556 mL HClO₄

500

3 Ca(OH)_2 (aq) + 3 H₃PO_{4 (aq)} --> Ca₃(PO₄)_{2 (s)} + 6 H₂O _(l)

Determine the number of milliliters of 0.0600 M phosphoric acid required to neutralize 52.52 mL of 0.0170 M calcium hydroxide. 

9.92 mL phosphoric acid

Stoichiometry

100

Stoichiometry uses the ___ __ ___ ratio to determine the amounts of each substance in a reaction. 

Mole to mole

200

C₆H₁₂O₆(aq) → 2 C₂H₅OH(aq) + 2 CO₂(g)

The fermentation of glucose produces ethanol and carbon dioxide as shown above. How many moles of CO₂ are produced when 0.400 mol C₆H₁₂O₆ reacts in this fashion?

0.800 mol CO₂ 

300

Al(OH)₃(s) + 3HCl(aq) → AlCl₃(aq) + 3H₂O(l)

Calculate the number of grams of HCl that can react with 0.500 grams of Al(OH)₃

0.701 g HCl

400

Na₂SiO₃(s) + 8 HF(aq) → H₂SiF₆(aq) + 2 NaF(aq) + 3 H₂O(l)

How many grams of Na₂SiO₃ can react with 0.800 grams of HF?

0.610 g Na₂SiO₃

500

2 NaN₃(s) → 2 Na(s) + 3 N₂(g)

How many grams of solid sodium are produced when 97.5 grams of NaN₃ decomposes? 

34.5 g Na(s)

Limiting Reactant

100

What is the substance that gets completely consumed by a chemical reaction called?

The limiting reactant?

200

2 Ca(s) + O₂(g) → 2 CaO(s)

If you have 4.20g of solid calcium reacting with 2.80g of oxygen gas, which is the limiting reactant?

Ca (s) is the limiting reactant 

300

Al₂S₃ + 6H₂O → 2Al(OH)₃ + 3H₂S

How many grams of aluminum hydroxide can form when 158 g of aluminum sulfide reacts with 131 g of water?

164 g Al(OH)₃ 

400

4NH₃ + 5O₂ --> 4NO + 6H₂O

What amount of excess reagent remains when 0.30 mol NH₃ reacts with 0.40 mol O₂ to produce NO and H₂O? 

0.025 mol O₂ (excess reactant) remains

500

4 Al _(s) + 3 O_2 (g) --> 2 Al₂O_{3 (s)}

The reaction of 5.50 g of Al (26.98 g/mol) with 5.50 g of O₂ (32.00 g/mol) produces Al₂O₃ (101.96 g/mol). How many grams of Al₂O₃ is produced? 

10.4 g

Reduction/ Oxidation

100

What mnemonic is used for determining what is being oxidized and what is being reduced?

OIL RIG 

Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons)

200

The species that is ___ is the oxidizing agent.

Reduced

300

2 HCl(aq) + Mg(s) --> H₂(g) + MgCl₂(aq) 

Which element is reduced? 

Hydrogen 

400

3 Li + Fe(NO₃)₃ --> 3 LiNO₃ + Fe

Which element is being oxidized?

Li is oxidized 

500

2 Sr + O₂ --> 2 SrO 

Which species is the oxidizing agent? 

O₂ is the oxidizing agent