Question

In the reaction of Mg (s) + 2 HCl (aq) arrow MgCl2 (aq) + H2 (g), which of the following would decrease the rate of the forward reaction?
Answer

Increasing the mass of magnesium

Changing HCl solution from 0.500 moles in 0.5 liters to 0.500 moles in 1.5 liters

Decreasing the pressure of the system

Increasing the surface area of the magnesium solid

Answer 1

B. because you are decreasing the concentration of HCl which would drive the reaction backwards.

Answer 2

i honestly don't know :( im sorry but if i would have to say B

Answer 3

@sweetburger Jenny completes an experiment in which she studies the reaction: A (g) + B (g) arrow C (l) + D (g). She finds the reaction occurs at a faster rate if the reactants are compressed. Explain Jenny's observation.

Answer 4

You have 2 moles of gas in the reactant side and only 1 mole of gas on the product side. If you increased the pressure/compacted the system you would essentially increases the concentration of the gaseous reactants and products. Because there are more gaseous reactants than products it would increase the forward reaction.

Answer 5

making sense?