Le Chatelier’s Principle/Ocean Acidification/Antacid Neutralization Rxns
What is the effect of adding a catalyst to a system at equilibrium?
A catalyst speeds up both the forward and reverse reactions equally, so it does not affect the equilibrium position
What is the pH of a 0.02 M HCl solution?
HCl is a strong acid, so [H+] = 0.02 M. pH = -log(0.02) = 1.7.
If 5.0 moles of aluminum (Al) are reacted with 7.5 moles of sulfur (S), identify the limiting reactant and determine how many moles of Al₂S₃ are formed?
The limiting reactant is the one that produces the least amount of product. In this case, both reactants produce the same amount of Al₂S₃ (2.5 moles), so neither is limiting
Oxygen (O): Molar mass is 16.00 g/mol, and there are two O atoms.
32.00 g/mol
How do you name Chemical Formulas?
Identify the type of compound (ionic or molecular), recognize the elements involved, and use prefixes to indicate the number of atoms in molecular compound.
How does pressure affect the equilibrium in reactions involving gases?
A solution has a pOH of 4.5. What is the pH?
pH = 14 - 4.5 = 9.5.
There is about 1.0 g of calcium, as Ca2+, in 1.0 L of milk. What is the molarity of Ca2+ in milk?
0.025 M
C2H5OH+3O2 ->2CO2+3H2O
Unbalanced
What is the reaction where metathesis occurs?
Double Displacements Reaction
How does ocean acidification affect marine life?
It makes it harder for marine organisms, like shellfish, corals, and some plankton, to build and maintain their shells and skeletons, potentially leading to reduced growth, increased vulnerability to predation, and even death.
What are acids and bases?
Acids are substances that release hydrogen ions (H+) in water, while bases release hydroxide ions (OH-).
In the reaction 2H₂(g) + O₂(g) → 2H₂O(g), what is the mole ratio of hydrogen (H₂) to water (H₂O)?
The mole ratio of H₂ to H₂O is 1:1.
Fe(s) + Cu(NO3)2(aq) → Fe(NO3)2(aq) + Cu(s)
Iron displaces copper from copper nitrate, forming iron nitrate and solid copper.
What is the reaction where a chemical reaction where one element replaces another in a compound?
Single displacement Reaction
How does ocean acidification impact ecosystems?
It can disrupt food webs, affect coral reef structure and development, and potentially lead to the decline of fisheries and other marine resources.
What are some common properties of acids and bases?
Acids are sour, turn blue litmus paper red, and react with metals. Bases are bitter, turn red litmus paper blue, and feel slippery.
We have 35.9g AlCI3. How many grams of CI2 do we need?
BCE***: 2Al(s) + 3CI2(g) —> 2AlCI3(s)
35.9g CI2
What is a Classify chemical reaction?
combination (or synthesis), decomposition, single replacement, double replacement, and combustion reactions.
What is a hydrogen bond?
A hydrogen bond is a specific type of intermolecular force that occurs between a hydrogen atom covalently bonded to a highly electronegative atom (like oxygen, nitrogen, or fluorine) and another electronegative atom with a lone pair of electrons.
What is the neutralization reaction of an antacid?
Neutralization reaction between magnesium hydroxide and hydrochloric acid Mg(OH)2(s) + 2HCl(aq) → 2H2O(l) + MgCl2(aq) b.
What is climate change?
Climate change refers to long-term shifts in temperature and weather patterns, primarily due to increased greenhouse gas concentrations in the atmosphere.
What is Balancing Chemical Equation?
A balanced chemical equation shows the same number of atoms of each element on both the reactant and product sides of the equation.
What holds intermolecular forces together?
Intermolecular forces are electrostatic in nature and include van der Waals forces and hydrogen bonds.