Limiting Reagents

Front

What is a limiting reagent?

Back

A limiting reagent is the reactant that is completely consumed in a chemical reaction, limiting the amount of product that can be formed.

Tags

NGSS.HS-PS1-7

Front

How do you identify the limiting reagent in a reaction?

Back

To identify the limiting reagent, calculate the moles of each reactant and determine which one produces the least amount of product.

Front

What is the balanced equation for the reaction between silver nitrate and sodium phosphate?

Back

3AgNO3 + Na3(PO4) -> Ag3(PO4) + 3NaNO3

Tags

NGSS.HS-PS1-2

Front

If 200 g of silver nitrate and 200 g of sodium phosphate are reacted, how do you calculate the mass of silver phosphate produced?

Back

1. Convert grams to moles for each reactant. 2. Use stoichiometry based on the balanced equation to find the moles of silver phosphate produced. 3. Convert moles of silver phosphate back to grams.

Tags

NGSS.HS-PS1-7

Front

What is percent yield in a chemical reaction?

Back

Percent yield is the ratio of the actual yield to the theoretical yield, multiplied by 100.

Front

How do you calculate percent yield?

Back

Percent yield = (actual yield / theoretical yield) x 100.

Front

What is the molar mass of a compound?

Back

The molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

How do you calculate the molar mass of a compound?

Back

To calculate molar mass, sum the atomic masses of all atoms in the compound's formula.

Front

What is the total mass of a 0.75 mole sample of SO2?

Back

Total mass = moles x molar mass. Molar mass of SO2 = 32 g/mol, so total mass = 0.75 x 32 = 24 g.

Front

What is the molar mass of AuCl3?

Back

The molar mass of AuCl3 is calculated as follows: Au (197 g/mol) + 3 x Cl (35.5 g/mol) = 197 + 106.5 = 303.5 g/mol.