Qualitative analysis - Test for cations (+)

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/7

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

8 Terms

1
New cards

Aluminium (Al³+)

  • Aqueous sodium hydroxide: white ppt., soluble in excess, giving a colourless solution

  • Aqueous ammonia: white ppt., insoluble in excess

2
New cards

Ammonium (NH4^+)

  • Aqueous sodium hydroxide: ammonia produced on warming

  • Aqueous ammonia: no effect

3
New cards

Calcium (Ca²+)

  • Aqueous sodium hydroxide: white ppt., insoluble in excess

  • Aqueous ammonia: no ppt., or very slight white ppt.

4
New cards

Chromium (III) (Cr³+)

  • Aqueous sodium hydroxide: green ppt., soluble in excess

  • Aqueous ammonia: green ppt., insoluble in excess

5
New cards

Copper (II) (Cu²+)

  • Aqueous sodium hydroxide: light blue ppt., insoluble in excess

  • Aqueous ammonia: light blue ppt., soluble in excess, giving a dark blue solution

6
New cards

Iron (II) (Fe²+)

  • Aqueous sodium hydroxide: green ppt., insoluble in excess, ppt. turns brown near surface on standing

  • Aqueous ammonia: green ppt., insoluble in excess, ppt. turns brown near surface on standing

7
New cards

Iron (III) (Fe³+)

  • Aqueous sodium hydroxide: red-brown ppt., insoluble in excess

  • Aqueous ammonia: red-brown ppt., insoluble in excess

8
New cards

Zinc (Zn²+)

  • Aqueous sodium hydroxide: white ppt., soluble in excess, giving a colourless solution

  • Aqueous ammonia: white ppt., soluble in excess, giving a colourless solution