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When Active Metals Such as Magnesium Are Immersed in Acid

Question 102

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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