Question

A cube of limestone is slower to react in a beaker of acetic acid than the same amount of limestone in powder form. Which is the best reason that the cube takes longer to react?

A.It is under greater pressure, which requires more energy to break bonds.
B.It is more concentrated, which causes fewer collisions of reactant molecules.
C.It has less surface area, which causes fewer collisions of reactant molecules.
D.It has reactants with higher activation energies so it takes longer to break bonds.

Answer 1

if u had a sugar cube and put it in your tea how much time would it take to dissolve? and if u had a powdered one how long would it take?

Answer 2

do u like put ur hand on the sugar to dissolve it??

Answer 3

or put more sugar to dissolve it?

Answer 4

does it make sense, to put pressure or more concentration?

Answer 5

B?

Answer 6

nooo
look the question is not telling u that they are adding more of anything

Answer 7

in both cases the amount is same
but the form is different

Answer 8

so what can u cancel out? from these options

Answer 9

I can cancel B and D right?

Answer 10

thats right :)

Answer 11

now u r left with A and C

Answer 12

which one makes more sense to u?

Answer 13

A

Answer 14

why?

Answer 15

how come its under pressure?

Answer 16

A larger bond energy implies the bond is harder to break?

Answer 17

yes

Answer 18

but understand this one thing whether its cube or powder
its still same compound and that means the bonds are same

Answer 19

oh okay I see, thanks for the help (:

Answer 20

did u get which one is the answer?

Answer 21

Good job @Somy !

Answer 22

Is c the correct answer ?

Answer 23

Yes
thanx :)