Stu Dent does the ternary mixture separation. His results are 50 % NaCl, 37 % Si

Question

Stu Dent does the ternary mixture separation. His results are 50 % NaCl, 37 % SiO2, and 20 % CaCO3. The class average results for his lab section are 33 % for each species.

Analyze Stu’s results – choose one or more items for each of his chemical species, making sure the explanations are actually physically possible.

NaCl increased – the solid is still wet.

NaCl increased – the solid is contaminated with CaCO3.

NaCl decreased – the solid is lost by “splattering”.

NaCl decreased – the solid partially evaporated.

SiO2 increased – the solid is still wet. SiO2 increased – the solid is contaminated with CaCO3

SiO2 decreased – some solid spilled. SiO2 decreased – some solid evaporated.

CaCO3 increased – the solid is contaminated with SiO2.

CaCO3 increased – the solid is still wet. CaCO3 decreased – the solid did not form completely.

CaCO3 decreased – the solid partially evaporated.

Explanation / Answer

NaCl increased because of it is wet

SiO2 increased because it is contaminated with CaCO3 as calcium silicate

CaCO3 decreased because some amount is combined with SiO2

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.