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1gram of a sample of CaCO(3) was strongl...

1gram of a sample of `CaCO_(3)` was strongly heated and the `CO_(2)` liberated was absorbed iun 100mL of 0.5 M NaOH solution. Assuming 90% purity for the sample, how many mL of 0.5M HCl would be required to react with the resulting solution to reach the end point inpresence of phenolphthaein?

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NARENDRA AWASTHI-STOICHIOMETRY-Level 3 - Subjective Problems
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  2. What volume of a liquid (in L) will contain 10 mole ? If molar mass of...

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  3. 16 g of SO(x) gas occupies 5.6 L at 1 atm and 273 K.What will be the v...

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  8. Calculate the total moles of atoms of each element present in 122.5 g ...

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  10. One gram of a metallic chloride was found to contain 0.835 g of chlori...

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  12. 2.0 g of polybasic organic acid (Molecular mass =600) required 100 mL ...

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  13. A mixture contains 1.0 mole each of NaOH,Na(2)CO(3) and NaHCO(3). When...

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  14. When BrO(3)^(-) ion reacts with Br^(-) ion in acidic medium, Br(2) is ...

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  15. A volume of 12.5 mL of 0.05 M SeO(2) reacts with 25 mL of 0.1 M CrSO(4...

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  16. A 0.276 g impure sample of copper ore is dissolved and Cu^(2+) is titr...

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  17. A sample of 28 mL of H(2) O(2) (aq) solution required 10 mL of 0.1 M K...

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  18. For the redox reaction given, what is the value of (x)/(z) ? xNO(3)^...

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  19. On heating 0.220 g of a metallic oxide in presence of hydrogen,0.045 g...

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  20. 10 g mixture of K(2)Cr(2)O(7) and KMnO(4) was treated with excess of K...

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