Question

the diagram below is a model of two solutions. each purple ball represents one particle of solute. solvent volume: 35 ml solvent volume: 20 ml solution a solution b which solution has a higher concentration of purple 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

Let number of solute particles in Solution A \(n_A = 8\), volume of solvent \(V_A=35\space mL\). Then \(C_A=\frac{8}{35}\approx0.229\) (particles per mL)

Step3: Calculate concentration of Solution B

Let number of solute particles in Solution B \(n_B = 2\), volume of solvent \(V_B = 20\space mL\). Then \(C_B=\frac{2}{20}= 0.1\) (particles per mL)

Answer:

Solution A