Question

1.0 g of ZnSO

4 is dissolved in water & diluted to

250 mL. 25 mL of this ZnSO

4 solution is titrated

with Na2

-EDTA solution from burette to obtain end

point 14.3 mL. This standardized EDTA solution

was titrated with 50 mL of water sample to obtain

7.5 mL burette reading. Calculate hardness of water.​

Answer 1

Answer:

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Explanation:

The price of onions increased by 30%. Next month the price decreased by 30%. What is the net increase or decrease per cent in the price of the onions?