Đáp án:
a) 9,5
b) 25% và 75%
Giải thích các bước giải:
\(\begin{array}{l}
a)\\
Mhh = 0,3276 \times 29 = 9,5004\\
b)\\
C1:\\
M{H_2} = 2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,22,5\,\,\,\\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,9,5\\
M{O_2} = 32\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,7,5\\
= > n{H_2}:n{O_2} = 3:1\\
\% V{H_2} = 75\% \\
\% V{O_2} = 25\% \\
C2:\\
hh = 1\,mol\\
hh:{H_2}(a\,mol),{O_2}(b\,mol)\\
a + b = 1\\
2a + 32b = 9,5\\
= > a = 0,75\,b = 0,25\\
= > \% V{H_2} = 75\% \\
\% V{O_2} = 25\%
\end{array}\)
