# How the unreactivity of lithium hydride makes it useful in synthesis of other useful hydrides? [closed]

I have seen the following chemical property of lithium hydride in the textbook which seems to be incomplete:

Lithium Hydride is rather unreactive at moderate temperatures with $${O_2}$$ or $${Cl_2}$$.It is therefore, used in the synthesis of other useful hydrides.

$$\ce{8LiH + Al2Cl6 -> 2LiAlH4 + 6LiCl}$$

$$\ce{2LiH + B2H6 -> 2LiBH4 }$$

But why the unreactivity of lithium hydride makes it useful in synthesis of other useful hydrides?

## closed as unclear what you're asking by Mithoron, Todd Minehardt, Tyberius, DrMoishe Pippik, A.K.Mar 7 at 16:20

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• "Usefulness" is a subjective term and cannot be judged outside the context. What textbook you've seen it in? – andselisk Mar 4 at 9:30
• here is the link for the page(ncert.nic.in/textbook/textbook.htm?kech2=2-7) (page 15 pdf )(288) – pranjal verma Mar 4 at 10:05
• The equations make no sense. Not only are they unbalanced, but they have different elements in and out. – DrMoishe Pippik Mar 6 at 0:43
• Sorry for the mistake,it was just an error. – pranjal verma Mar 7 at 6:37