What is the molarity of a solution containing 25.5 g KBr dissolved in enough water to make 1.75 L of solution?

Transcribed Image Text:

SORT You are given the mass of KBr and the volume of a solution and asked to find its molarity. STRATEGIZE When formulating the conceptual plan, think about the definition of molarity, the amount of solute in moles per liter of solution. You are given the mass of KBr, so first use the molar mass of KBr to convert from g KBr to mol KBr. Then use the number of moles of KBr and liters of solution to find the molarity. GIVEN: 25.5 g KBr, 1.75 L of solution FIND: molarity (M) CONCEPTUAL PLAN g KBr 1 mol 119.00 g mol KBr, L solution Molarity (M)= mol KBr Molarity amount of solute (in mol) volume of solution (in L) RELATIONSHIPS USED molar mass of KBr = 119.00 g/mol