A student was given four unknown solutions. Each solution was checked for. conductivity and tested with. phenolphthalein. The re
sults are shown in the data table below
based on the data table which unknown solution could be 0.1 M NaOH
1.A. 2.B
3.C. 4.D
The table is that it talks about is in the picture attached
based on the data table which unknown solution could be 0.1 M NaOH
1.A. 2.B
3.C. 4.D
The table is that it talks about is in the picture attached
1 answer:
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<u>Answer:</u> The concentration of ions are 2.797 ppm and 0.212 ppm respectively.
<u>Explanation:</u>
To calculate the mass of solution, we use the equation:
Volume of gold = 100 L = 100000 mL (Conversion factor: 1 L = 1000 mL)
Density of gold = 1.001 g/mL
Putting values in above equation, we get:
To calculate the concentration in ppm (by mass), we use the equation:
- <u>Calculating the concentration of calcium ions:</u>
Mass of ions = 0.280 g
Putting values in above equation, we get:
- <u>Calculating the concentration of magnesium ions:</u>
Mass of ions = 0.0220 g
Putting values in above equation, we get:
Hence, the concentration of ions are 2.797 ppm and 0.212 ppm respectively.