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The decomposition of $NH _3$ on platinum surface is zero order reaction. What are the rates of production of $N _2$ and $H_2$ if $k=2.5 \times 10^{-4} mol^{-1} Ls ^{-1}$ ?
In the button cells widely used in watches and other devices the following reaction takes place :
$Zn _{( s )}+ Ag _2 O _{( s )}+ H _2 O _{( l )} \rightarrow Zn _{( aq )}^{2+}+2 Ag _{( s )}+2 OH _{( aq )}^{-}$
Determine $\Delta_{ r } G ^{\circ}$ and $E ^{\circ}$ for the reaction.
Explain vapour pressure of solutions of solids in liquids.
  1. What type of isomerism is shown by the complex [Co(NH3)6] [Cr(CN)6]?
  2. Why a solution of [Ni(H2O)6]2+ is green while a solution of [Ni(CN)4]2– is colourless?(At. no. of Ni = 28)
  3. Write the IUPAC name of the following complex: [Co(NH3)5(CO3)]Cl.
Nitrogen pentoxide decomposes according to equation: $\text{2N}_{2}\text{O}_{5}\text{(g)}\rightarrow\text{4NO}_{2}\text{(g)}+\text{O}_{2}\text{(g)}.$
This first order reactionwas allowed to proceed at 40° C and the data below were collected:
[N2O5](M) Time (min)
0.400 0.00
0.289 20.0
0.209 40.0
0.151 60.0
0.109 80.0
  1. Calculate the rate constant. Include units with your answer.
  2. What will be the concentration of N2O5 after 100 minutes?
  3. Calculate the initial rate of reaction.
  1. Deficiency of which vitamin causes night-blindness?
  2. Name the base that is found in nucleotide of RNA only.
  3. Glucose on reaction with HI gives n-hexane. What does it suggest about the structure of glucose?
Match the items of column I with items of column II.
 
Column I
 
Column II
(i)
Antifreeze used in car engine
(a)
Neutral ferric chloride
(ii)
Solvent used in perfumes
(b)
Glycerol
(iii)
Starting material for picric acid
(c)
Methanol
(iv)
Wood spirit
(d)
Phenol
(v)
Reagent used for detection of phenolic group
(e)
Ethleneglycol
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By product of soap industry used in cosmetics
(f)
Ethanol.
How will you convert bromobenzene to benzoic acid?
Explain the nomenclature of phenols by giving examples.
Lanthanum, gadolinium and lutetium are extraordinarily stable in +3 oxidation state. Explain.
(Atomic number: La = 57, Gd = 64, Lu = 71)