Le Chatelier’s Principle
What does Exothermic mean?
The giving off of heat.
What is the pH of an acid?
0-7
What is the difference from acids and bases?
Acids release H⁺ ions in water and taste sour. Bases release OH⁻ ions in water and feel slippery.
What is a coefficient?
The number placed before a chemical formula to balance an equation.
What is the formula for a potassium chloride?
KCl
What does Endothermic mean?
What is the pH level for a base?
7-14
N2+3H2→2NH3
Calculate the Limiting Reactant.
Limiting reactant: Hydrogen gas (H₂)
Moles of ammonia produced: 8 moles
What is the purpose of balancing chemical equations?
To make sure the number of atoms of each element is the same on both sides.
What is the name of the compound with the formula NaCl?
Sodium Chloride
What does Chemical Equilibrium mean?
When it is stable.
What is the reason of climate change?
Human activities.
What is the massfield currency?
grams.
Balance this equation:
Al+O2→Al2O3\text{Al} + \text{O}_2 \rightarrow \text{Al}_2\text{O}_3Al+O2→Al2O3
4Al+3O2→2Al2O3
What is the name of the compound with the formula CaCO₃?
Calcium carbonate
2H 2 S (g) -- 2H 2 (g) + S2 (g) H= 52 kJ
If S2 decreases, what is the equilibrium shift?
Left.
If the pOH of a solution is 3, calculate [H+][H^+][H+].
pH= 11
You dissolve 5 moles of sodium chloride (NaCl) in enough water to make 2 liters of solution. What is the molarity of the solution?
The molarity of the solution is 2.5 M (moles per liter).
What is the balanced chemical equation for the reaction of aluminum with oxygen?
4Al + 3O₂ → 2Al₂O₃
Write the chemical formula for magnesium sulfate.
MgSO4
2H 2 S (g) -- 2H 2 (g) + S2 (g) H= 52 kJ
If temperature decreases, what is the equilibrium shift and what happens to H2?
Left, H2 increases.
Label all Acid-Base
HC2 H3 O2 + H20 -- H30+1 + C2 H3 O2-1
HC2 H3 O2 + H20 -- H30+1 + C2 H3 O2-1
BLA BLB CA CB
v b b v
C3H8+5O2→3CO2+4H2O
If 2 moles of propane (C₃H₈) react, how many moles of carbon dioxide (CO₂) are produced?
6 moles of CO₂ are produced when 2 moles of propane react.
Balance the equation:
C3H8+O2→CO2+H2OC_3H_8 + O_2 \rightarrow CO_2 + H_2OC3H8+O2→CO2+H2O
C3H8+5O2→3CO2+4H2O
Write the chemical formula for iron(III) chloride.
FeCl3