Hydrogen

Question 1

H2 high IE or low IE

Answer 1

High IE

Question 2

Water gas shift rxn

Answer 2

CO + H2O ——–> CO2 + H2

CO2 scrubbed off using sodium arsenite soln

Question 3

internuclear distance H vs D

Answer 3

H = D

Question 4

With inc in temp, disociation of H2 into atoms

Answer 4

increases

Question 5

photosynthesis what gets oxidised what gets reduced

Answer 5

CO2 gets reduced to glucose

H2O gets oxidised to O2

Question 6

Covalent hydrides

Answer 6

Li, Be, Mg

Li, Be due to small size, Mg due to diagonal relationship with Li

Question 7

Deuterium is present in which form

Answer 7

HD

Question 8

tritium emits

Answer 8

low energy B- particles

Question 9

Enthalpy of formation D2O vs H2O

Answer 9

D2O more -ve than H2O

Question 10

Hydrides that are polymeric in nature

Answer 10

MgH2

BeH2

Question 11

MP, BP, BDE, Enthalpy of vaporization, Enthalpy of fusion H2O vs D2O

Answer 11

D2O > H2O

Question 12

Hydroformylation Markonikov or antimarkonikov

Answer 12

Anti

Question 13

Largest use of H2

Answer 13

Synthesis of NH3

Question 14

Law violated by interstitial hydrides

Answer 14

Law of constant composition

Question 15

Prep of LiAlH4 using LiH

Answer 15

LiH + Al2Cl6 ——-> LiAlH4 + LiCl

Question 16

Prep of LiBH4

Answer 16

LiH + B2H6 ——–> LiBH4