Answer:
Explanation:The pH scale ranges from 0 to 14. The pH of a solution is a measure of its acidity or alkalinity (base). ... A change of one unit on the pH scale represents a change in the concentration of hydrogen ions by a factor of 10, a change in two units represents a change in the concentration of hydrogen ions by a factor of 100.
The balanced equation for the above reaction is;
2H₂(g) + O₂ --> 2H₂O
Stoichiometry of H₂ to O₂ is 2:1
This means that the molar ratio in which H₂ reacts with O₂ is in the 2:1 ratio.
At constant temperature and pressure , number of moles are directly proportional to volume of gas. Therefore volume ratio in which H₂ reacts with O₂ is 2:1.
volume of 2 mL of H₂ reacts with 1 mL of O₂
therefore 250 mL of H₂ reacts with - 1/2 x 250 = 125 mL
volume of 125 mL of O₂ is required for the reaction
Dudrittotot7d77
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PV = nRT, R = 0.0821 L•atm/mol•K
V = nRT/P = [(7.7)(0.0821)(256)]/0.099
V = 161.84/.099 = 1634.7 L
