CHEM5J

Le Chatelier’s Principle, pH, & Ocean Acidification

100

What did the ocean do to balance ↑C0₂ in atmosphere?

The ocean takes in more C0₂.

200

The ocean absorbs about 30% of gas in the atmosphere. Which is the main cause of ocean acidification.

Carbon Dioxide

300

2H₂0 (g) <---> 2H₂ (g) + O₂ <H=485KJ 

Is H₂ concentration increasing or decreasing?

Decreasing

400

2H₂0 (g) <---> 2H₂ (g) + O₂ <H=485KJ

Is pressure increasing or decreasing?

Increasing

500

2H20 (g) <---> 2H2 (g) + O2 <H=485KJ

Is the temperature increasing or decreasing?

Right, decreasing

Acids & Bases, Chemical Equilibrium, & Conjugate Acid-Base Pairs

100

Label the acids and bases in this equation in its order

H₂0 (&) + HF (aq) <---> F^-1 (aq) + H₃0⁺¹ (aq) ?

BLB, BLA, CB, CA

200

What do acids do to become a conjugate base?

Donates a proton

300

What do bases do to become a conjugate act?

 Accepts a proton

400

What state occurs at the same rate as RR in chemical equilibrium?

FR

500

Calculate the [OH^-1] in a aqueous solution at 25*C with 1.0x10^-7 m OH^-1.

Determine the solution type?

[H+] = 1.0x10^-7m / Neutral

Stoichiometry

100

What is the limiting reaction if there are 56 marshallows, 120 graham crackers, 232 chocolate in store and the recipe consists of 2 marshmallows, 4 graham crackers, and 8 chocolate?

Marshmallows

200

Calculate the #g O₂ needed if 8.35x10²⁶ molecules (molc) CO₂ form? BCE: C₃H₈ + 5O₂ (g) ---> 3Co₂ (g) + 4H₂0 (g)

740x10⁴ = g O₂

300

Calculate #mol Fe needed if 5.73g Fe₂O₃ are produced? BCE: 4Fe (s) + #O₂ (g) ---> 2Fe₂O₃ (s)

0.0718 mol Fe

400

Calculate the molarity of solution prepared by dissolving 79.368 g InPO₄ in enough water to make 40.85L of solution?

0.009 m InPO₄

500

Calculate #mol C₄H₁₀ needed when 5.7 mol Co₂ is produced. BCE: 2C₄H₁₀ (g) + 13O₂ (g) ---> 8Co₂ (g) + 10H₂0 (g)

1.425 mol O₂

Chemical Reactions

100

Calculate MM for Al₂ (SiO₃)₃ = Aluminum Silicate

282.23 g/mol

200

For determining products for single displacement rxn if its less reactive what occurs?

No reaction

300

What type of reaction occurs when two substances combine to form one?

Synthesis reaction

400

What type of reaction occurs when one compound breaks down apart into smaller substances?

Decomposition reaction

500

Balance the equation.

F₂ (g) + AgCl (aq) --->?

No reaction

Intermolecular Forces, Names, & Chemical Formulas

100

What are intermolecular forces?

Forces of attraction between molecules

200

What is hydrogen bonding?

A strong intermolecular force that occurs when hydrogen is bonded to nitrogen, oxygen, or fluoride

300

What is the name of the chemical formula NaCl?

Sodium Chloride

400

What is the chemical formula for calcium chloride?

CaCl₂

500

What is the chemical formula for magnesium oxide?

MgO