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).
\(\therefore 12cm^{3} O_{2} \to 2 \times 12cm^{3} = 24cm^{3} H_{2}\)
\(\text{Excess of Hydrogen} : 35 cm^{3} - 24 cm^{3} = 11 cm^{3}\)
\(\text{% Hydrogen left after the reaction} = \frac{11}{35} \times 100% = \frac{220}{7} = 31.48% \)
\(\approxeq 31% \)
The separation technique that is suitable for separating iodine from tetrachloromethane is ...
2HCL(ag) + CaCO3(ag) → CaCL2(ag) + H2O(1) + CO from the reaction above, which of the following ...
A colored gas that is known to be poisonous and can readily damage the mucous lining of the lun...
Given that for the reaction. N2(g) + 3H2(g) ⇌ 2NH3(g) ∆H = -92kJ. What is the enthalpy of format...
The first metal used by man was ...
Boyle's law can be expressed mathematically as ...
The IUPAC nomenclature for the compound above is ...
When element \(_{20}\)Y combines with element \(_8\)Z, it forms...