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Chemistry
7. The p-block Elements
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Q40 of 72 Page 96

Write the structure of pyrophosphoric acid.

pyro.png


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38

In the preparation of H2SO4 by Contact Process, why is SO3 not absorbed directly in water to form H2SO4?

39

Write a balanced chemical equation for the reaction showing catalytic oxidation of NH3 by atmospheric oxygen.

41

PH3 forms bubbles when passed slowly in water but NH3 dissolves. Explain why?

42

In PCl5, phosphorus is in sp3d hybridised state but all its five bonds are not equivalent. Justify your answer with reason.

Questions · 72
7. The p-block Elements
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