Annie Termaat and Christopher Talbot Solutions for Chapter: What are the Impacts of Chemical Industry?, Exercise 8: ACTIVITY: Balancing simple chemical equations 'algebraically'

Deduce how given equation should be correctly balanced.

${\mathrm{H}}_3{\mathrm{BO}}_3\left(\mathrm{aq}\right)\to {\mathrm{H}}_4{\mathrm{B}}_6{\mathrm{O}}_{11}\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$

Deduce how given equation should be correctly balanced.

${\mathrm{P}}_2{\mathrm{I}}_4\left(\mathrm{s}\right)+{\mathrm{P}}_4\left(\mathrm{s}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\to {\mathrm{PH}}_4\mathrm{I}\left(\mathrm{s}\right)+{\mathrm{H}}_3{\mathrm{PO}}_4\left(\mathrm{aq}\right)$

Deduce how given equation should be correctly balanced.

${\mathrm{AsCl}}_3\left(\mathrm{aq}\right)+{\mathrm{NaBH}}_4\left(\mathrm{aq}\right)\to {\mathrm{AsH}}_3\left(\mathrm{g}\right)+\mathrm{NaCl}\left(\mathrm{aq}\right)+{\mathrm{BCl}}_3\left(\mathrm{l}\right)$

Deduce how given equation should be correctly balanced.

$\mathrm{Cu}\left(\mathrm{s}\right)+{\mathrm{HNO}}_3\left(\mathrm{l}\right)\to \mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)+\mathrm{NO}\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$

Deduce how given equation should be correctly balanced.

${\mathrm{KIO}}_3\left(\mathrm{aq}\right)+\mathrm{KI}\left(\mathrm{aq}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{K}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+{\mathrm{I}}_2\left(\mathrm{aq}\right)$

Identify where phosphorous and arsenic are located on the periodic table. What do the compounds they form suggest about their reactivity and electronegativity on the basis of following reactions.

${\mathrm{P}}_2{\mathrm{I}}_4\left(\mathrm{s}\right)+{\mathrm{P}}_4\left(\mathrm{s}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\to {\mathrm{PH}}_4\mathrm{I}\left(\mathrm{s}\right)+{\mathrm{H}}_3{\mathrm{PO}}_4\left(\mathrm{aq}\right)$

${\mathrm{AsCl}}_3\left(\mathrm{aq}\right)+{\mathrm{NaBH}}_4\left(\mathrm{aq}\right)\to {\mathrm{AsH}}_3\left(\mathrm{g}\right)+\mathrm{NaCl}\left(\mathrm{aq}\right)+{\mathrm{BCl}}_3\left(\mathrm{l}\right)$