Halogen compound and Synthesis Halogen

Which range presents the decreasing order of acidity?

• HCl > HBr >HI> HF

• HI > HBr > HCl > HF

• HF > HCl > HBr > HI

• HF > HI > HBr > HCl

Which is the reaction that was applied in industrial synthesis of Chlorine gas?

• $MnO_2+4HCl\ →MnCl_{2\ }+2H_2O\ +Cl_2\uparrow$

• $2KMnO_4\ +16HCl\ \rightarrow\ 2KCl\ +2MnCl_2\ +8H_2O\ +5Cl_2$

• $KClO_3\ +6HCl\ \rightarrow\ KCl\ +3H_2O\ +\ 3Cl_2\uparrow$

• $2NaCl\ +\ 2H_2O\ _{\overrightarrow{electrolyte\ wt\ membrane}}\ \ H_2\uparrow\ +Cl_2\uparrow\ +\ 2NaOH$

Which are figures of Chlorine gas synthesis?

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Which one has negative oxidation number?

• HClO

• HClO₄

• HBrO

• OF

Full component of Javel solution

• NaCl + NaClO + H₂O

• NaClO + H₂O

• NaClO + HClO + H₂O

• HCl + HClO + H₂O

How is Florine gas prepared?

• Let Calcium Flourine react with Sulfuric acid

• Silicate oxide reacts with hydroflouric gas

• Electrolyte (with membrane) the solution of Sodium Flouride

• Electrolyte mixture of Potassium Floride & hydroflouric

Which range presents the decreasing order of oxidative property?

• HClO₄ > HClO₃ > HClO₂ > HClO

• HClO > HClO₂ > HClO₃ > HClO₄

• HClO₄ > HClO₂ > HClO₃ > HClO

• HClO > HClO₃ > HClO₂ > HClO₄

Using only a reagent to distinguish these halogen ion: F^-, Cl^-, Br^-, I^-

• HgCl₂

• Hg(NO₃)₂

• AgNO₃

• AgCl

Why does colorless HBr solution, put such a long time in the air, turn to brownish yellow?

• There is a HBr decomposition, Br₂ is released

• HBr react with O₂, which releases Br₂

• HBr reacr with Cl₂, which release Br₂

Which compound was used in engraving glass?

• HF

• HCl

• HClO

• HBrO