Podcast
Questions and Answers
Qual è le colore del precipitate formate quando on adde NaOH in excesso al cation de zinco?
Qual è le colore del precipitate formate quando on adde NaOH in excesso al cation de zinco?
Qual è le colore del precipitate formate quando on adde CaCl2 al cation de calcio?
Qual è le colore del precipitate formate quando on adde CaCl2 al cation de calcio?
Qual è le colore del precipitate formate quando on adde FeCl2 al cation de ferro(II)?
Qual è le colore del precipitate formate quando on adde FeCl2 al cation de ferro(II)?
Quale gas produce un colore pallide verd al reagentes?
Quale gas produce un colore pallide verd al reagentes?
Signup and view all the answers
Qual es le reaction de sulfure de carbon quando illo es addite al manganese potassic acidificate?
Qual es le reaction de sulfure de carbon quando illo es addite al manganese potassic acidificate?
Signup and view all the answers
Qual es le color del precipitate formate quando on adde NaOH in excesso al cation de ferro(III)?
Qual es le color del precipitate formate quando on adde NaOH in excesso al cation de ferro(III)?
Signup and view all the answers
What color precipitate forms when iron(III) ion reacts with FeCl2?
What color precipitate forms when iron(III) ion reacts with FeCl2?
Signup and view all the answers
When excess NaOH is added to a zinc ion solution, what color precipitate is observed?
When excess NaOH is added to a zinc ion solution, what color precipitate is observed?
Signup and view all the answers
What gas turns damp red litmus paper blue?
What gas turns damp red litmus paper blue?
Signup and view all the answers
In the presence of Fe(II) ions, what color precipitate forms when ammonia is added in excess?
In the presence of Fe(II) ions, what color precipitate forms when ammonia is added in excess?
Signup and view all the answers
When silver nitrate is added to a solution containing Li+ ions, what color precipitate is formed?
When silver nitrate is added to a solution containing Li+ ions, what color precipitate is formed?
Signup and view all the answers
What gas holds a lit splint in the mouth of a test tube to relight it?
What gas holds a lit splint in the mouth of a test tube to relight it?
Signup and view all the answers
Study Notes
Testes pro Cationes
- Metal cationes se pode identificar per methodo ①: adder NaOH e subsequente adder de S04 o NaOH in excesso.
- Sodium (Na+) no produce precipitate.
- Indium (In2+) produce un precipitate blanco con S04.
- Cupro (Cu2+) produce un precipitate azur blau con CuSO4.
- Calcium (Ca2+) produce un precipitate blanco con CaChz.
- Chromo (Cr3+) produce un precipitate blanco con Crz(SO4)3, que es soluble in OH-.
- Ferro (Fe2+) produce un precipitate ross-brun con Fe(OH)2, que no es soluble in OH-.
- Ferro (Fe3+) produce un precipitate ross-brun con Fe(OH)3, que es soluble in OH-.
Testes pro Gases
- Ammonia (NH3) es un gas incolor, con un odor pungent e damp, que fa que le papiro de litmus rubio se volve azur.
- Dioxid de carbon (CO2) es un gas incolor, con un odor neutro, que fa que le aqua de limewater se volve milky o cloudy.
- Chloro (Cl2) es un gas verde pallide, con un odor asfixiante, que fa que le papiro de litmus azur se volve rubio.
- Oxygen (O2) es un gas incolor, con un odor neutro, que fa que le splint de test tube relight.
- Sulfur dioxide (SO2) es un gas incolor, con un odor pungent, que fa que le potassium manganate acidificate se volve brun.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz covers the test for cations in chemistry, including reactions with Sodium hydroxide (NaOH) and identification of metal ions like Zinc, Copper, Calcium, Chromium, and Iron. It includes observations of precipitates formed by different cations.
