Description : More powerful than HF, HCl, HBr ?
Last Answer : HF is more powerful.
Description : Who has the highest boiling point in HBr & HCl and why ?
Last Answer : answer:
Description : `CH_(2)=CH-CH_(2)-CH_(2)-C-=CH underset((1 eq))overset(HBr)to ` Product is
Last Answer : `CH_(2)=CH-CH_(2)-CH_(2)-C-=CH underset((1 eq))overset(HBr)to ` Product is A. `BrCH_(2)-CH_(2)- ... (3)-underset(Br)underset(|)CH-CH_(2)-CH_(2)-C-=CH`
Description : Calculate the entropy of `Br_(2)(g)` in the reaction `H_(2)(g)+Br_(2)(g)rarr2HBr(g), Delta S^(@)=20.1 JK^(-1)` given, entropy of `H_(2)` and HBr is 13
Last Answer : Calculate the entropy of `Br_(2)(g)` in the reaction `H_(2)(g)+Br_(2)(g)rarr2HBr(g), Delta S^(@)=20.1 JK^(-1 ... ` C. `24.63 JK^(-1)` D. `20 KJK^(-1)`
Description : Which is the best description of the behaviour of bromine in the reaction given below `H_(2)O+Br_(2) rarr HOBr+HBr`
Last Answer : Which is the best description of the behaviour of bromine in the reaction given below `H_(2)O+ ... . Oxidized C. Reduced only D. Proton acceptor only
Description : `PH_(3) ("anhydrous") + HBr ("anhydrous") rarr X`. Identify X ?
Last Answer : `PH_(3) ("anhydrous") + HBr ("anhydrous") rarr X`. Identify X ? A. `H_(3)BrO_(3)` B. `PH_(4)Br` C. `Br_(2)` D. `P_(4)`
Description : Which of the following hydrogen halides react with `AgNO_3` to give a precipitate that dissolves in hypo solution ? (I)HCl (II)HF (III)HI (IV)HBr
Last Answer : Which of the following hydrogen halides react with `AgNO_3` to give a precipitate that dissolves in hypo solution ? (I) ... II),(I) D. (II),(IV),(III)
Description : The number of cornpounds.’elements oxidised by `XeF_2` among following is: HF, HBr, HCl, HI, `NH_3, CrF_2`, Pt, `S_8`
Last Answer : The number of cornpounds.’elements oxidised by `XeF_2` among following is: HF, HBr, HCl, HI, `NH_3, CrF_2`, Pt, `S_8`
Description : Concentrated `H_(2)SO_(4)` cannot be used to prepare HBr from NaBr , because it ,
Last Answer : Concentrated `H_(2)SO_(4)` cannot be used to prepare HBr from NaBr , because it , A. (A) ... (C) disproportionates HBr D. (D) reacts slowly with NaBr
Description : Identify A and B In following reaction, `H_2SO_4 + HBr to A + B + H_2O `
Last Answer : Identify A and B In following reaction, `H_2SO_4 + HBr to A + B + H_2O ` A. (A) `Br_2, SO_3` B. (B) ` ... C) `BrO_3^(-) , SO_3` D. (D) `Br_2 , SO_2`
Description : Dehydrobromination `(-HBr)` of the following in increasing order will be :
Last Answer : Dehydrobromination `(-HBr)` of the following in increasing order will be : A. `IltIIltIII` B. `IIIltIIltI` C. `I=IIltIII` D. `IIIltI=II`
Description : Kharasch effect regarding addition of HBr is not observed in:
Last Answer : Kharasch effect regarding addition of HBr is not observed in: A. hex-1-ene B. hex-2-ene C. hex-3-ene D. pent-1-ene
Description : Condiser the reactions, (i) `(CH_(3))_(2)CH-CH_(2)Broverset(C_(2)H_(5)OH)rarr(CH_(3))_(2)CH-CH_(2)OC_(2)H_(5)+HBr` (ii) `(CH_(3))_(2)CH-CH_(2)Broverse
Last Answer : Condiser the reactions, (i) `(CH_(3))_(2)CH-CH_(2)Broverset(C_(2)H_(5)OH)rarr(CH_(3))_(2)CH-CH_(2)OC_(2)H_(5) ... N^(1))` D. `S_(N^(2)) and S_(N^(2))`
Description : `HBr` reacts with `CH_(2)=CH-OCH_(3)` under anhydrous conditions at room temperature to give:
Last Answer : `HBr` reacts with `CH_(2)=CH-OCH_(3)` under anhydrous conditions at room temperature to give: A. `H_(3)C-CHBr- ... (3)OH` D. `BrCH_(2)-CH_(2)-OCH_(3)`
Last Answer : Concentrated `H_(2)SO_(4)` cannot be used to prepare HBr from NaBr , because it ,
Description : Match the following: Column I(reaction) (a) `H_(2)O_(2)+underset("2moles")(ClSO_(3)H) rarr` (b)`SO_(3)+HClrarr` c) `SO_(3)+HBr rarr` (d) `underset(("c
Last Answer : Match the following: Column I(reaction) (a) `H_(2)O_(2)+underset("2moles")(ClSO_(3) ... chloride t)Hydrogen halide is obtained as the product.
Description : Concentrated sulphuric acid connot be used to prepare HBr or HI from KBr of KI because it
Last Answer : Concentrated sulphuric acid connot be used to prepare HBr or HI from KBr of KI because it A. reacts too slowly ... to `KBrO_(3)` or KI to `KIO_(3)`
Description : What is the intermolecular forces in HBr?
Last Answer : These are dipole-dipole forces.
Description : Is HBr dipole-dipole?
Last Answer : Hydrogen bromide has a covalent bond.
Description : Is Hbr non polar or Polar?
Last Answer : Polar!
Description : Is HBr molecular or ionic?
Last Answer : HBr is a polar molecular compound which exists in gaseousform.
Description : Arrange the following in order of decreasing reactivity towards alkanes. HCl, HBr, HI, HF
Last Answer : Ans. HI> HBr> HCl >HF
Description : Use the information and data given below to answer the questions Stronger intermolecular forces result in higher boiling point Strength of London forces increases with the number of electrons in the molecule ... here? (c) Why is the boiling point of HF highest while that of HCl lowest?
Last Answer : Ans :( a) In the molecules HCl, HBr and HI, dipole-dipole interaction and London forces are present. (b) Dipole moment of HCl > HBr > HI but boiling point of HCl < HBr
Description : Which of the following cannot be stored in glass bottle? A. Aqua regia B. HF (Answer) C. HCL D. HBr
Last Answer : B. HF (Answer)
Description : Bromobenzene can be prepared by treating aniline with (a) Conc HBr (b) Br2/FeBr3 (b) CuBr (d) Nitrous acid then CuBr
Last Answer : Nitrous acid then CuBr
Description : Cyclopropane reacts with concentrated HBr to give. (a) 1-Bromopropane (b) Bromocyclopropane (c) 2-Bromopropane (d) 1,2-Dibromopropane
Last Answer : 1-Bromopropane
Description : Ethylene oxide reacts with HBr to give (a) 1-Bromoethanol (b) Ethyl bromide (c) 2-Bromoethanol (c) Ethylene glycol
Last Answer : 2-Bromoethanol
Description : Which of the following is the best method for preparing CH3Br? (a) CH3OH + Br– (b) CH3OH + HBr (c) CH3OH + Br2 (d) CH3OH + NaBr
Last Answer : CH3OH + HBr
Description : Which of the following compounds reacts fastest with HBr? (a) 1-propanol (b) 2-methyl-1-propanol (c) 2-propanol (d) 2-methyl-2-propanol
Last Answer : 2-methyl-2-propanol
Description : The best way to prepare 1,2-Dibromoethane is to treat : (a) Ethylene with Br2 (b) Acetylene with excess of HBr (c) Ethylene with excess of HBr (d) 1,2-Dichloroethane with Br2
Last Answer : Ethylene with Br2
Description : 1-Butyne reacts with (a) NaNH2 (b) Dil H2SO4 and HgSO4 (c) HBr (d) All of these
Last Answer : All of these
Description : Starting with 2-butene, which of the following is the best method for preparing 2-butyne? (a) HBr; H2/Ni; Zn/H+ (b) HBr; Zn/H+; H2/Ni (c) Br2/CCl4; Zn/H+; H2/Ni (d) Br2/CCl4; 2NaNH2
Last Answer : Br2/CCl4; 2NaNH2
Description : Which of the following compounds is the major product when 1-hexyne is treated with excess HBr? (a) 1,1-dibromohexane (b) 1,1-dibromohexene (c) 1,2-dibromohexene (d) 2,2-dibromohexane
Last Answer : 2,2-dibromohexane
Description : What compound results from the 1,4-addition of one equivalent of HBr to 1,3-butadiene? (a) 1-bromo-1-butene (b) 2-bromo-2-butene (c) 4-bromo-1-butene (d) 1-bromo-2-butene
Last Answer : 1-bromo-2-butene
Description : 2-Methyl-2-butene reacts with HBr in the presence of peroxide to give (a) A primary alkyl bromide (b) A secondary alkyl bromide (c) A tertiary alkyl bromide (d) A vicinal dibromide
Last Answer : A secondary alkyl bromide
Description : 2-Methylpropene reacts with HBr in the presence of peroxide to give (a) A primary alkyl bromide (b) A secondary alkyl bromide (c) A tertiary alkyl bromide (d) A vicinal dibromide
Last Answer : A primary alkyl bromide
Description : Propene reacts with HBr in the presence of a peroxide to give (a) n-Propyl bromide (b) Allyl bromide (c) Isopropyl bromide (d) Vinyl bromide
Last Answer : n-Propyl bromide
Description : Which of the following alkenes reacts with HBr in the presence of a peroxide to give anti-Markovnikov's product? (a) 1-Butene (b) 2,3-Dimethyl-2-butene (c) 2-Butene (d) 3-Hexene
Last Answer : 1-Butene
Description : 2-Butene reacts with HBr to give (a) 1-Bromobutane (b) 2,3-Dibromobutane (c) 2-Bromobutane (d) 2,2-Dibromobutane
Last Answer : 2-Bromobutane
Description : 2-Methylpropene reacts with HBr to give (a) tert-Butyl bromide (b) Isobutane (c) n-Butyl bromide (d) None of these
Last Answer : tert-Butyl bromide
Description : Markovnikov's addition of HBr is not applicable to (a) Propene (b) 1-butene (c) 1-pentene (d) 2-butene
Last Answer : 2-butene