In the questions below, consider the following binary hydrides: CaH2, CH4, NH3,

Question

In the questions below, consider the following binary hydrides:

CaH2, CH4, NH3, B2H6, H2O, H2O2, HF

1. which is a strong reducing agent

2. Which compound gives a strongly basic solution upon reaction with water?

3. which is a strong oxidant

4. Which compound is least likely to react to give either an acid or a base?

Could anyone please check if I got the right answer below?

5. Arrange the three (3) binary hydrides below from most ionic to most covalent

     CaH2 HCl CH4

6. Arrange the three (3) binary hydrides below from most acidic to most basic.

HCl CH4 NaH

Please help me with the questions above. thank you

Explanation / Answer

1) diborane(B2H6) :strongest reducing agent,

2) CaH2 + H2O ---> Ca(OH)2 (strong base) +H2 (g)

CaH2 gives a strongly basic solution upon reaction with water

3) Hydrogen peroxide (H2O2) is one of the most powerful oxidant known.

4) CH4 being covalent hydrideis least likely to react..

5) Arrange the three (3) binary hydrides below from most ionic to most covalent

     CaH2(ionic) , HCl ,CH4(covalent) (correct)

6) HCl(most acidic) , CH4 ,NaH(most basic) (correct)

good :) for #5 and 6

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