Question

What is the correct unit for the following solution?

$0.5mg$ of arsenic dissolved in $1kg$ of solution. (All the symbols given are in their standard form)

• A. $w/w$
• B. $m$
• C. $M$
• D. $v/v$
• E. $ppm$

Answer 1

The correct option is A $w/w$

0.5 mg of arsenic dissolved in 1 kg of solution. Both of the solute and solvent are given in terms of mass.

Therefore, Option a is correct.