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Posted by on Wednesday, May 22, 2013 at 10:08pm.

If you add a metal piece to excess acid, what of listed factors below will increase, decrease, or have no impact on how fast a reaction happens?

a) lower molarity (concentration) of a solution
b) higher molarity (concentration)of a solution
c) increase volume of a solution (with the same molarity)
d) decrease volume of a solution (with the same molarity)

  • chemistry - , Wednesday, May 22, 2013 at 10:40pm

    Generally adding more (higher conc) acid will increase rate and lower M will decrease rate. Changing the volume up or down will not impact the rate assuming you have enough to begin with to have a reaction.

  • chemistry - , Wednesday, May 22, 2013 at 11:07pm

    Ok, so the shape of the metal affects the reaction rate, correct? And any shape, will increase the rate, right?

  • chemistry - , Thursday, May 23, 2013 at 12:01am

    I don't think the shape has much to do with reaction rate other than how much surface area is exposed. Increasing the surface area increases the rate of reaction.

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