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Worksheetsproperties of halogens
Total questions: 10
Worksheet time: 5mins
Chlorine compounds show oxidation states ranging from –1 to +7. What are the reagent(s) and conditions necessary for the oxidation of elemental chlorine into a compound containing chlorine in the +5 oxidation state?
AgNO3(aq) followed by NH3(aq) at room temperature
concentrated H2SO4 at room temperature
cold dilute NaOH(aq)
hot concentrated NaOH(aq)
which statement is true about halogens?
form covalent compounds with other non-metallic elements
A less reactive halogen will displace a more reactive element form its ionic salt
Form ionic compound with hydrogen
form negative ion of charge -2
which one is used in the manufacture of bleaches
Hydrochloric caid
sodium hydroxide
silver iodide
hydrogen
Which one does NOT represent a possible reaction?
fluorine + sodium chloride ==> sodium fluoride + chlorine
chlorine + sodium iodide ==> sodium chloride + iodine
chlorine + potassium bromide ==> potassium chloride + bromine
bromine + sodium chloride ==> sodium bromide + chlorine
Which four numbers a, b, c and d are required to balance the equation?
a Cl2(aq) + b KI(aq) ==> c KCl(aq) + d I2(aq)
2 1 1 2
1 2 2 1
2 1 2 1
1 2 1 2
which property of halogens increases from fluorine to iodine
electronegativity of elements
oxidizing power of elements
bond length in the halogen molecule
First ionization energy
The given table shows the results obtained when the halogens X2, Y2 and Z2 were added to separate aqueous solutions containing X-, Y- and Z-. which set correctly shows the strength (strongest first) of the ions X-, Y- and Z- as reducing agents?
X- Y- , Z-
X-, Z-, Y-
Y-, Z-, X-
Z-, X-, Y-,
silver nitrate is added to an aqueous solution containing Br- to give a precipitate X, which is then tested for its solubility in concentrated ammonia. which of the following correctly describes the the colour of X and its solubility in ammonia.
white insoluble
cream slightly soluble
white slightly soluble
yellow insoluble
An excess of aqueous solution of silver nitrate is added to an aqueous solution containing both potassium chloride and potassium bromide. the precipitate formed is the filtered off and washed with distilled water. The precipitate is then shaken with aqueous ammonia and filtered off again.which ion does the final filtrate contain?
chloride
silver
iodide
potassium
Which property of halogen decreases down the group?
Bond energy of the hydrogen halogen bond
Thermal stability
Boiling point
Reducing ability of halides
