Chemistrymedium · Past Paper
Which of the following will have the fastest reaction rate with 1M HCl?
AA single 5g marble chip (CaCO3)
B5g of crushed marble chips
C5g of marble powder
DThey will all have the same rate
✓ Correct Answer: C — 5g of marble powder
Increased surface area (powdered form) allows for more collisions between reactants, leading to a faster reaction rate.
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