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When Active Metals Such as Magnesium Are Immersed in Acid

Question 2

Multiple Choice

When active metals such as magnesium are immersed in acid solution, hydrogen gas is evolved.Calculate the volume of H2(g) at 30.1°C and 0.85 atm that can be formed when 275 mL of 0.725 M HCl solution reacts with excess Mg to give hydrogen gas and aqueous magnesium chloride.


A) 3.4 × 10-3 L
B) 2.2 L
C) 2.9 L
D) 5.8 L
E) 11.7 L

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