Multiple Choice
The following reaction is used to generate hydrogen gas in the laboratory. If 243 mL of gas is collected at 25 °C and has a total pressure of 0.9933 bar, what mass of hydrogen is produced? A possibly useful table of water vapour pressures is provided below. Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) T (°C) P (bar)
20 0.023398
25 0.031704
30 0.042477
A) 0.0196 g H2
B) 0.0717 g H2
C) 0.0190 g H2
D) 0.0144 g H2
E) 0.0449 g H2
Correct Answer:
Verified
Correct Answer:
Verified
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