Write an essay of the required length explaining how to prepare exactly 50 mL of an...

Write an essay of the required length explaining how to prepare exactly 50 mL of an aqueous solution of NaCl that has a concentration of 12.0 ppm and an inherent error (precision) of 1% or less. Include in your essay the reasons for your choice of sample size and equipment at each step.

I just need to know the procedure on how to prepare the solution.. I asked earlier and they gave me 0.6mg which gives me 12ppm but it gave me a huge inherent error %. please help

Expert Solution

ppm = 1 g = 1 g = 1 mg = 1 mg = 1 microgram
10⁶ mL 1000 L 1 L 1 kg 1 g

ppm concentration = 1 mg/1L

12.0 ppm = x mg / 0.05 L

x mg = 12.0 * 0.05

= 0.6 mg

queen_honey_blossom answered 2 years ago

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