P-Block Elements Ques 223

Question: $ Ca_2B_6O_{11}+2Na_2CO_3\to X-2CaCO_3+2NaBO_2. $ The compound X in the above reaction is

Options:

A) $ Na_2B_4O_7 $

B) $ HBO_2 $

C) $ H_3BO_3 $

D) $ H_2B_4O_7 $

Show Answer

Answer:

Correct Answer: A

Solution:

$ \underset{Colemanite}{\mathop{Ca_2B_6O_{11}}}+2Na_2CO_3\to \underset{(X)(Borax)}{\mathop{Na_2B_4O_7}}+2NaBO_2+2CaCO_3 $



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