Question

Hệ số hô hấp của các chất sau: stearic acid, glycerin, oxalic acid, triolein, ethanol.

Answer 1

* Stearic acid:

\(C_{17}H_{35}COOH+26O_2\rightarrow18CO_2+18H_2O\)

\(\Rightarrow H=\dfrac{18}{26}\approx0,69\)

* Glycerin:

\(2C_3H_5\left(OH\right)_3+7O_2\rightarrow6CO_2+8H_2O\)

\(\Rightarrow H=\dfrac{6}{7}\approx0,86\)

* Oxalic acid:

\(2\left(COOH\right)_2+O_2\rightarrow4CO_2+2H_2O\)

\(\Rightarrow H=\dfrac{4}{1}=4\)

* Triolein:

\(\left(C_{17}H_{33}COO\right)_3C_3H_5+80O_2\rightarrow57CO_2+52H_2O\)

\(\Rightarrow H=\dfrac{57}{80}=0,7125\)

* Ethanol:

\(C_2H_5OH+3O_2\rightarrow2CO_2+3H_2O\)

\(H=\dfrac{2}{3}\approx0,67\)