Question

the diagram below is a model of two solutions. each green ball represents one particle of solute. solvent volume: 45 ml solution a solvent volume: 30 ml solution b which solution has a higher concentration of green particles? solution a solution b neither; their concentrations are the same

Explanation:

Step1: Calculate concentration of Solution A

Concentration \(C=\frac{\text{Number of solute particles}}{\text{Volume of solvent}}\). For Solution A, assume number of green - ball (solute) particles \(n_A = 12\) and solvent volume \(V_A=45\space mL\). Then \(C_A=\frac{12}{45}=\frac{4}{15}\approx0.27\) particles/mL.

Step2: Calculate concentration of Solution B

For Solution B, assume number of green - ball (solute) particles \(n_B = 3\) and solvent volume \(V_B = 30\space mL\). Then \(C_B=\frac{3}{30}= 0.1\) particles/mL.

Answer:

Solution A