Question

What happens when - give balanced chemical equation:(i) BCl3 reacts with LiAlH4(ii) Ca2B6O11 reacts with Na2CO3

Answer 1

(i) 4 BCl3 + 3 LiAlH4 = 2 B2H6 + 3 LiCl + 3 AlCl3

(ii) Ca2B6O11 + 2 Na2Co3 = 2CaCo3 + Na2B4O7 + 2 NaBO2

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Answer 2

Answer : The chemical reactions are given below.

Explanation:

(i) The balanced chemical reaction will be,

$4BCl_3+3LiAlH_4\rightarrow 2B_2H_6+3LiCl+3AlCl_3$

By the stoichiometry of the reaction:

4 moles of boron chloride react with 3 moles of lithium aluminium hydride to give 2 moles of borane, 3 moles of lithium chloride and 3 moles of aluminium chloride.

(ii) The balanced chemical reaction will be,

$Ca_2B_6O_{11}+2Na_2CO3\rightarrow 2CaCO_3+Na_2B_4O_7+2NaBO_2$