Question

CaCl2*2H2O solution was prepared using 1.4704g of CaCl2*2H2O and diluted to 100mL. 4 Calcium Standard Calibration Solutions were prepared then using the CaCl2*2H2O solution prepared earlier and a prepared KCl solution to make the following:
- Std 1 solution (0.00001xxxM Ca2+)
- Std 2 solution (0.0001xxxM Ca2+)
- Std 3 solution (0.001xxxM Ca2+)
- Std 4 solution (0.01xxxM Ca2+)

I need to calculate the concentration of Ca2+ (M) i in each standard solution using the mass of CaCl2*2H2O
please show me how to do this ?

Answer 1

@abb0t help please?

Answer 2

@Preetha ?

Answer 3

@timo86m

Answer 4

Hi @timo86m , got any ideas? we have to use the mass for the calculations

Answer 5

sorry idk :(