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WorksheetsPharm 114L Midterm
Total questions: 15
Worksheet time: 7mins
Which of the following statements is/are TRUE about ammonia?
Ammonia molecules are more soluble in warm water than in cold water.
Changes red litmus paper to blue.
Ammonia belongs to group V cations.
None of the choices are correct
Group IV cations is composed of ____.
Ions of alkali metals and magnesium
Ions of alkaline earth metals and magnesium
Ions of transition metals
Chlorides of alkali metals
Which of the following statements is ACCURATE about the precipitation of Group V cations?
Barium ions can produce similar precipitate as sodium ions when zinc uranyl acetate is used as a precipitating reagent.
Nitrite can precipitate both potassium and ammonium ions.
Precipitation reactions are the most reliable test for Group V cation identification.
None of the choices
The cations of group IV is precipitated as ___.
chlorides.
sulfides.
phosphates.
carbonates.
Which of the following is/are polyatomic compound/s belonging to Group V cations?
Potassium
Ammonium
Sodium
None of the choices
Which reagent/s is/are used to clean the platinum wire before conducting flame tests?
Conc. NH3
Conc. HCl
Conc. H2SO4
Conc. HNO3
Which of the following is NOT correctly matched?
Barium : Brick red flame
Potassium : Reddish-violet flame
All of the options are matched correctly
What is the property of nitrite anion that is responsible for its therapeutic use as an antidote to cyanide poisoning?
Oxidizing property
Reducing property
Neutralizing property
Buffering property
In the identification of carbonate anion, bubbling formation is due to the liberation of which gas?
Ammonia
Oxygen
Carbon dioxide
Nitrogen
Which compound is implicated as the most common component of kidney stones?
Calcium carbonate
Sodium carbonate
Calcium oxalate
Calcium phosphate
Which of the following reagents precipitate all group II anions as salts?
Hydrochloric acid
Sodium acetate
Barium acetate
Magnesium hydroxide
Which of the following compounds is utilized as an antidote for Cesium and Thallium poisoning?
Blue vitriol
Prussian blue
Copper sulfate
Turnbull's blue
Group 1 anion with the same number of valence as Arsenate:
Fluoride
Carbonate
Phosphate
These statements describe the chromate anion
Identification Test: Sodium acetate allows the re-precipitation of Barium chromate.
Barium chromate, a white precipitate, confirms the presence of chromate anion in an unknown solution
Chromate belongs to group 3 anion
In the identification of sulfide anion, the blackening or dark spot presented on the filter paper treated with lead acetate is what compound?
Plumbous sulfide
Plumbous sulfate
Plumbous chloride
Plumbic sulfate
