Question

the diagram below is a model of two solutions. each ball represents one particle of solute. which solution has a higher concentration of purple particles? solution a solution b neither; their concentrations are the same

Explanation:

Step1: Calculate concentration of purple particles in Solution A

Concentration \(C=\frac{\text{Number of particles}}{\text{Volume of solvent}}\). For Solution A, number of purple particles \(n_A = 1\), volume of solvent \(V_A=25\space mL\). So \(C_A=\frac{1}{25}= 0.04\space particles/mL\)

Step2: Calculate concentration of purple particles in Solution B

For Solution B, number of purple particles \(n_B = 6\), volume of solvent \(V_B = 35\space mL\). So \(C_B=\frac{6}{35}\approx0.17\space particles/mL\)

Answer:

Solution B