Question

the diagram below is a model of two solutions. each pink ball represents one particle of solute. solvent volume: 40 ml solvent volume: 30 ml solution a solution b which solution has a higher concentration of pink particles? solution a solution b neither; their concentrations are the same

Explanation:

Step1: Calculate concentration formula

Concentration \(C=\frac{\text{Number of solute particles}}{\text{Volume of solvent}}\)

Step2: Calculate concentration of Solution A

Solution A has \(n_A = 8\) solute particles and \(V_A=40\space mL\). So \(C_A=\frac{8}{40}= 0.2\space particles/mL\)

Step3: Calculate concentration of Solution B

Solution B has \(n_B = 2\) solute particles and \(V_B = 30\space mL\). So \(C_B=\frac{2}{30}\approx0.067\space particles/mL\)

Answer:

Solution A