Question # On strong heating, one gram of the silver salt of an organic silver. If the mass percentage of carbon in it 8 times one-half the mass percentage of oxygen, determine the molecular formula of the acid.

# On strong heating, one gram of the silver salt of an organic silver. If the mass percentage of carbon in it 8 times one-half the mass percentage of oxygen, determine the molecular formula of the acid.

(a) ( mathrm{C_{4}} H_{6}O_{4}) ({} )

(b) ( mathrm{C}_{4} mathrm{H}_{6} mathrm{O}_{6} )

(c) (C_{2}H_{6}O_{2})

(d) ( mathrm{C}_{5} mathrm{H}_{10} mathrm{O}_{5} )

Solution

[

begin{array}{l}

mathrm{Ag}_{2} mathrm{c}_{x} mathrm{HyO}_{2} rightarrow 2 mathrm{Ag}

quad 0.6 mathrm{g}

text { male of } mathrm{Ag}=frac{0.6}{108}=0.00555

end{array}

]

males of compound = ( 0.0055 / 2 )

[

=0.00277

]

Wt of c_{x} Hy0z. (mean acia)

[

=1-0.6=0.4 g

]

male wt of neid ( = )

[

text { D } frac{0.4}{M-2}=0.00277

]

as two hydrogens with remarks often rkn with ag

[

M-2=144.40

]

[

begin{array}{l}

m approx 146 text { . }

mathrm{C}_{4} mathrm{H}_{6} mathrm{O}_{6}=48+6+96=150approx 146

end{array}

]

Because in question wt of Ag is

is not exact