Scheme 2 - Unknown Scheme 1 A description of the unknown is...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Unknown Scheme 1. A description of the unknown is taken: Liquid, solid, color, smell, shape, solubility 2. The flame test is done: ~ No color flame indicates that the ions K+, Na+, Ca2+ are absent NH4+, Mg(H20)6, Al(H20)6 could be present ~Red color flame indicates that the ion Ca2+ is in the sample ~Yellow/Orange color flame indicates that the ion Na+ is in the sample ~Light purple color flame indicates that the ion K+ is in the sample 3. The pH tests are done: ~the pH strips are used in order to test the pH. pH ~1.5-2.0= HSO4- is in the sample ~3.0= (CO3) 2- and HCO3-, OH- is NOT in the sample Al(H20)6 is present in sample ~5.0-6.0=NH4+, Mg(OH2)6 is in the sample ~7.0=K+, Ca2+, Na+, Cl-, SO42-, and NO3- maybe in the sample ~9.0=HCO3- is in the sample NOT HSO4-, Al(H20)6, OH- ~12.0= (CO3)2- is in the sample NOT HSO4-, Al(H20)6, NH4+ ~13.0= OH- is in the sample NOT HSO4-, HCO3-, Al(H20)6, NH4+ pH for insoluble compounds: Ca(OH)2: ~ 12.6 CaSO4•2H2O: ~ 7.0 CaCO3: ~ 10.0 MgCO3: ~ 9.5 Mg(OH)2: ~ 10.5
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 2

Scheme 2 - Unknown Scheme 1 A description of the unknown is...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online