Question
Explain the various methods of determining the order of a reaction.

Answer

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  1. Following are the transition metal ions of 3d series:

Ti4+, V2+, Mn3+, Cr3+

(Atomic numbers : Ti = 22, V = 23, Mn = 25, Cr = 24)

Answer the following:

  1. Which ion is most stable in an aqueous solution and why?
  2. Which ion is a strong oxidising agent and why?
  3. Which ion is colourless and why?
  1. Complete the following equations:
  1. $2\text{ }\text{MnO}_4^-+16\text{ }\text{H}^++5\text{ }\text{S}^{2-}\xrightarrow{\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }}$
  1. $\text{KMnO}_4\xrightarrow{\text{ }\text{ }\text{ }\text{ }\text{ }\text{heat}\text{ }\text{ }\text{ }\text{ }\text{ }}$
Answer the following questions.
Comment on the specificity of enzyme action. What is the most important reason for their specificity?
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  1. Transition metals show variable oxidation states.
  2. Zn, Cd and Hg are soft metals.
  3. Evalue for the Mn3+/Mn2+ couple is highly

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  1. Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.
  1. Give three points of difference between lanthanoids and actinoids.
  2. Give reason and select one atom/ion which will exhibit asked property:
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