To determine the best way to represent the concentration of a [tex]$1.75 M K_2CrO_4$[/tex] solution, we need to understand the different options provided.
1. [tex]$1.75\%$[/tex]:
- This represents a percentage concentration, which is not appropriate for a molarity (M) concentration. Therefore, this option is incorrect.
2. [tex]$\left[ K_2CrO_4 \right] = 1.75 M$[/tex]:
- This represents the concentration of the [tex]$K_2CrO_4$[/tex] solution in molarity (M). It correctly indicates that the concentration of [tex]$K_2CrO_4$[/tex] in the solution is [tex]$1.75$[/tex] mol/L.
3. [tex]$\left( K_2CrO_4 \right)$[/tex]:
- This notation is incomplete as it does not indicate the concentration or the units of measurement. Therefore, this option is incorrect.
4. [tex]$K_2CrO_4, [ M ]$[/tex]:
- This representation is ambiguous and lacks clarity in conveying the actual concentration of the solution. Therefore, this option is incorrect.
The best and clearest representation of the concentration of a [tex]$1.75 M K_2CrO_4$[/tex] solution is:
[tex]$\left[ K_2CrO_4 \right] = 1.75 M$[/tex].
This notation clearly indicates the molarity of the solution.
