CHEMISTRY
JAMB 2000 - Question 5
Chemistry 2000 JAMB Past Questions - Question 5: How many moles of HCL will be required to react with potassium heptaoxodichromate (VI) to produce 3 moles of chlorine?
Choose the correct answers from the options given.
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Correct Answer
A
Explanation
K₂Cr₂O₇ + 14HCL --------- 2CrCL₃ + 2KCL + 3CL₂ + 7H₂OTo find out how many moles of HCl are required to react with potassium heptaoxodichromate (VI) to produce 3 moles of chlorine, we can use the balanced chemical equation for the reaction.
The balanced chemical equation for the reaction is:
2 K2Cr2O7 + 14 HCl → 2 CrCl3 + 2 KCl + 3 Cl2 + 7 H2O
From the balanced equation, we can see that 14 moles of HCl are required to produce 3 moles of Cl2.
So, if we want to produce 3 moles of Cl2, we will need 14 moles of HCl.
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