Chem Post 2

Front

What is the balanced equation for the combustion of methane?

Back

CH₄ + 2 O₂ → CO₂ + 2 H₂O

Front

What type of reaction is represented by the equation Pb(NO₃)₂ (aq) + 2NaI (aq) → PbI₂ (s) + 2NaNO₃ (aq)?

Back

Double Replacement Reaction

Front

How many liters of carbon dioxide gas at STP are produced by the combustion of 64.0 g of methanol?

Back

22.4 L

Front

What is the correct formula for potassium sulfite?

Back

K₂SO₃

Front

Write the unbalanced equation for aluminum bromide reacting with rubidium acetate.

Back

AlBr₃ + RbC₂H₃O₂ → Al(C₂H₃O₂)₃ + RbBr

Front

What is the definition of a combustion reaction?

Back

A combustion reaction is a chemical reaction that occurs when a substance reacts with oxygen, producing energy in the form of heat and light.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What are coefficients in a chemical equation?

Back

Coefficients are the numbers placed in front of the compounds in a chemical equation to indicate the number of molecules or moles of each substance.

Front

What is the difference between a single replacement reaction and a double replacement reaction?

Back

In a single replacement reaction, one element replaces another in a compound. In a double replacement reaction, the ions of two compounds exchange places.

Front

What is STP in chemistry?

Back

STP stands for Standard Temperature and Pressure, which is 0 degrees Celsius and 1 atmosphere of pressure.