REPORT REACTION TYPES, EQUATIONS AND QUALITATIVE ANALYSIS Student Name Lab Day A
ID: 482994 • Letter: R
Question
REPORT REACTION TYPES, EQUATIONS AND QUALITATIVE ANALYSIS Student Name Lab Day A. Qualitative analysis of known solutions (spot testing) Table 1: Report nal colour, then (i) state either precipitate (ppt) and amount, or colour change (cc), or no reaction (NR) (2 marks) Reagent added Test Solution Test white White WHITE Lead (II) Nitrate yellow White White PPT L CC L PPT s PPT M PPT s S Orange Blood red Yellow orange YELLow YELLow Iron (Ill) Nitrate PPT L PPT S CC L CC L Nickel (II) Nitrate Ni ORANGE Blue PURPLE PINK NR PPT L PPT TL PPT L PPT L Silver (I) Nitrate Blood red WHITE NR BLACK WHITE NR WHITE Barium Nitrate light yellow NR WHITE Negative Control Unknown Sample unknown Sample identity of unknown Cations: H:Explanation / Answer
The unknown sample # 6 contains Pb^2+ and Ni^2+.
Blue + white ppt
Pb(SCN)4
Ni(SCN)6^2+
CC L purple + white ppt
Ni(NH3)6^2+ (purple)
Pb(NH3)4^2+
red ppt
Ni(DMG)2
white ppt
PbCl2
white ppt
PbSO4
K2CrO4 KSCN NH3 DMG HCl H2SO4 orange ppt of PbCrO4Blue + white ppt
Pb(SCN)4
Ni(SCN)6^2+
CC L purple + white ppt
Ni(NH3)6^2+ (purple)
Pb(NH3)4^2+
red ppt
Ni(DMG)2
white ppt
PbCl2
white ppt
PbSO4
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.