Question

[Attempt any four questions]
Question 2
a) Write the equation for each conversion from A to E.
(a) Write equation for each conversion A to E.
Calcium carbonate → Calcium oxide
B > Calcium hydroxide
E
D_Calcium carbonate.
Calcium hydrogen carbonate
b) What will you observe when;
i) Potassium dichromate under goes thermal de composition.
ii) Zinc granules is added to Copper Sulphate solution.
Calcium is added to the cold water.
c) State two important defect of Mendeleev's periodic table.​

Answer 1

Answer:

c)Anomalous Pairs

The following pairs of elements don't follow the follow Mendeleev's Principles: Cobalt (58.9) with a higher atomic mass precedes Nickel (58.6) in the periodic table. Tellurium (127.6) with a higher atomic mass than Iodine (126.9) precedes it in the periodic table...

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