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JAMB Chemistry 2019 Paper
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Question : 80
Total: 80
Which of the following factors will speed up the rate of evolution of carbon (iv) oxide in the reaction below?
2HCl + CaCO
3
_3
3
→ CaCl
2
_2
2
+ H
2
_2
2
O + CO
2
_2
2
Increasing the concentration of the acid
Increasing the surface area of CaCO
3
_3
3
A and B
Reducing the concentration of the acid
Validate
Solution:
The following factors increase a reaction rate
- Increase in concentration of reactants
- Increase in temperature
- Addition of catalyst
- Increase in the surface area of reactant(s)
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