Question

Which of the following hydrides is least stable to hydrolysis?

• A. $\mathrm { CH } _ { 4 }$
• B. $\mathrm { SiH } _ { 4 }$
• C. $\mathrm { SnH } _ { 4 }$
• D. $\mathrm { PbH } _ { 4 }$

Answer 1

Answer: (B)

$\mathrm { SiH } _ { 4 }$

Answer 2

: Silicon hydrides are most easily hydrolysed.

$\mathrm { SiH } _ { 4 } + 3 \mathrm { H } _ { 2 } \mathrm { O } \rightarrow \mathrm { H } _ { 2 } \mathrm { SiO } _ { 3 } + 4 \mathrm { H } _ { 2 }$

$\mathrm { SiH } _ { 4 } + 2 \mathrm { NaOH } + \mathrm { H } _ { 2 } \mathrm { O } \rightarrow \mathrm { Na } _ { 2 } \mathrm { SiO } _ { 3 } + 4 \mathrm { H } _ { 2 }$