AP Chemistry Unit 4

Front

What is percent yield?

Back

Percent yield is the ratio of the actual yield to the theoretical yield, expressed as a percentage. It indicates the efficiency of a reaction.

Front

How do you calculate percent yield?

Back

Percent yield = (Actual Yield / Theoretical Yield) x 100%

Front

What is the formula to find the number of grams from molarity?

Back

Grams = Molarity (M) x Volume (L) x Molar Mass (g/mol)

Front

What is a limiting reactant?

Back

The limiting reactant is the substance that is completely consumed in a chemical reaction, limiting the amount of product formed.

Front

What are spectator ions?

Back

Spectator ions are ions that do not participate in the actual chemical reaction and remain unchanged in solution.

Front

How many valence electrons does nitrogen have?

Back

Nitrogen has 5 valence electrons.

Front

What is the molar mass of H3PO4?

Back

The molar mass of H3PO4 (phosphoric acid) is approximately 98 g/mol.

Front

What is the difference between theoretical yield and actual yield?

Back

Theoretical yield is the maximum amount of product that can be formed from given reactants, while actual yield is the amount of product actually obtained from a reaction.

Front

What is the role of coefficients in a balanced chemical equation?

Back

Coefficients indicate the relative amounts of reactants and products involved in a chemical reaction.

Front

How do you identify a strong electrolyte?

Back

A strong electrolyte is a substance that completely dissociates into ions in solution, such as NaCl or HCl.