35 cm3 of hydrogen was sparked with 12 cm3 of oxygen at 1...
35 cm3 of hydrogen was sparked with 12 cm3 of oxygen at 110°C and 760mm Hg to produce steam. What percentage of the total volume of gas left after the reaction is hydrogen?
11%
31%
35%
69%
Correct answer is B
Reaction for the equation:
\(2H_{2} + O_{2} \to 2H_{2} O\)
\(2 vol : 1 vol : 2 vol\)
Hence, 2 volumes of Hydrogen is needed for the reaction with Oxygen to produce steam (water).
\(\therefore 12cm^{3} O_{2} \to 2 \times 12cm^{3} = 24cm^{3} H_{2}\)
\(\text{Excess of Hydrogen} : 35 cm^{3} - 24 cm^{3} = 11 cm^{3}\)
\(\text{% Hydrogen left after the reaction} = \frac{11}{35} \times 100% = \frac{220}{7} = 31.48% \)
\(\approxeq 31% \)
How many isomeric forms are there for the molecular formula C3H6Br2?...
"Electrons always occupy the lowest empty energy level" is a statement of ...
Potassium tetraoxomanganate (VII) is often added to impure water to? ...
Which of the following statements about endothermic reaction is correct? ...
The best way of collecting chlorine is? ...
In the above experiment, the litmus paper will initially ...