AP EAMCET202418 May 2024Morning ShiftChemistrySolutionsActual
The concentration of IL of CaCO ₃ solution is 1000 ppm . What is its concentration in mol L ⁻¹ ? ( Ca =40 u , O =16 u , C =12 u )
Options
- A10⁻³
- B10⁻¹
- C10⁻⁴
- D10⁻²
Correct answer
D. 10⁻²
Step-by-step solution
ppm ( parts per million )= mg of solute L of solution Given, ppm =1000 aligned & volume =1 ~L & mg of solute = ppm L of solution & =10^3 1 & weight of solute =10^3 mg aligned aligned & Concentration = no. of moles volume & no. of moles = weight of solute molecular weight of solute aligned aligned & = 10^3 10⁻³ ~g 100 ~g ~mol ⁻¹ [1 mg =10⁻³ ~g ] & =10⁻² ~mol aligned Concentration (c) = 10⁻² ~mol 1 ~L =10⁻² ~mol ~L ⁻¹