This is the teacher's method.
Step 1 find the mass of the reduction tube
Step 2 add some of...
This is the teacher's method.
Step 1 find the mass of the reduction tube
Step 2 add some of the lead oxide to the reduction tube
Step 3 find the mass of the reduction tube and lead oxide
Step 4 pass hydrogen gas over the lead oxide and ignite the hydrogen at the hole
Step 5 heat the lead oxide strongly for 10 minutes
Step 6 keep passing hydrogen through the reduction tube until the tube and contents are cool Step 7 find the new mass of the reduction tube and its contents
(i) Give a reason why hydrogen is passed through the reduction tube until the tube and contents are cool.
Answers: 3
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