Which of the following procedures will separate a mixture of sand, sodium chloride and iodine into its components?
A. add water; filter; sublime; evaporate to dryness B. add water; sublime; filter; evaporate to dryness C. sublime; filter; add water; evaporate to dryness D. sublime; add water; filter; evaporate to dryness
Correct Answer: D
Explanation
The first step is to heat the mixture until the iodine sub limes, followed by adding water to dissolve the salt. Next is filtration to separate the undissolved sand from the salt water solution. The filtrate is then evaporated to dryness to get the solid salt \(( NaCl )\)