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The P-Block Elements

Question
CBSEENCH11007334
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Why dilute H2SO4 cannot be used for the laboratory preparation of carbon dioxide?

Solution

The dilute sulphuric acid reacts with marble to form calcium sulphate which being insoluble forms a protective coating on the surface of the marble. Hence further action by acid is stopped. 
CaCO subscript 3 space plus straight H subscript 2 SO subscript 4 left parenthesis dil. right parenthesis space rightwards arrow space stack CaSO subscript 4 space with protective space coating below plus CO subscript 2 space plus straight H subscript 2 straight O

Some More Questions From The p-Block Elements Chapter

What is the nature of boron trifluoride?

What is the structure of diborane?

Can borax bead test be performed for Ca2+ ion?

Which is the hardest compound of boron?

What is inorganic benzene? Write its formula. 

Name a hydride of boron which is used as reducing agent in organic chemistry. 

Does a molecule of BH3 exist?

What is relative stability of +1 oxidation state in group 13.

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