Home
Class 11
CHEMISTRY
Copper sulphate crystals contain 25.45% ...

Copper sulphate crystals contain `25.45% Cu `and `36.07% H_2O`. If law of constant composition is true, calculate the weight of copper required to obtain 40g of crystalline copper sulphate.

Text Solution

Verified by Experts

100g of copper sulphate contain 25.45g of copper
40g of copper sulphate would contain `25.45/100xx40 = 10.18g`
10.18g copper is needed to form 40g of hydrated copper sulphate.
Promotional Banner

Topper's Solved these Questions

  • ATOMIC STRUCTURE

    PATHFINDER|Exercise QUESTION BANK|373 Videos

  • CHEMICAL BONDING

    PATHFINDER|Exercise QUESTION BANK|69 Videos

Similar Questions

Explore conceptually related problems

Copper sulphate solution (250 mL) was electrolysed using a platinum anode and a copper cathode. A constant current of 2mA was passed for 16 min. It was found that after electrolysis the absorbance of the solution was reduced to 50% of its original value. Calculate the concentration of CuSO_(4) in the solution to begin with.

When 2 A current was passed for 1h through a copper sulphate solution, 2.369 g of copper was discharged. Find the atomic weight of copper.

9.7g of hydrated copper sulphate on heating loses 3.5 g of water. What is the percentage of water of crystallization?

An alloy contains 60% copper and 40% nickel. A piece of this alloy of mass 50 g is heated to 50^(@)C and than dropped into a calorimeter of water equivalent 10 g containing 40 g of water at 20^(@)C . Calculate the final temperature of the mixture. Specific heat of copper ="0.09 cal.g"^(-1).^(@)C^(-1) , and of nickel = "0.11 cal.g"^(-1).^(@)C^(-1)

The sulphate of metal M contains 20% of M. this sulphate is isomorphic with ZnSO_(4)*7H_(2)O . Which of the following are true about metal M-

Two electrolytic cells A and B contain gold salt and copper sulphate solution respectively . Two cells are combined in series and current is passed for 5 h . If the oxidation state of gold in gold salt solution is +3 and the amount of gold accumulated in cell A is 9.85 g , then find the amount of copper discharged in cell B ? [ Au = 197 , Cu = 63.5]

1.84 g of a mixture of CaCO_(3) and MgCO_(3) was heated to a constant weight. The constant weight of the residue was found to be 0.96g. Calculate the percentage composition of the mixture. (relative atomic masses of Ca and Mg are 40 and 24 respectively).

In the crystalline solid MSO_(4) , n H_(2)O of molar mass 250 g * mol^(-1) , the percentage of anhydrous salt is 64 by weight . The value of n is -

PATHFINDER-BASICS IN CHEMISTRY-QUESTION BANK
  1. Calculate the mass of 2.5 gram atom of magnesium.

    Text Solution

    |

  2. How many gram molecules are present in 4.9g of H2SO4?

    Text Solution

    |

  3. Why do we regard the gaseous state of water as vapours while that ammo...

    Text Solution

    |

  4. An element has fractional atomic mass. What does this indicate?

    Text Solution

    |

  5. When 4.2 g NaHCO3 is added to a solution of CH3COOH, weighing 10 g, it...

    Text Solution

    |

  6. Copper sulphate crystals contain 25.45% Cu and 36.07% H2O. If law of c...

    Text Solution

    |

  7. 10 ml of H2 contain 2000 molecules under certain temperature and press...

    Text Solution

    |

  8. One volume of hydrogen combines with sulphur to produce one volume of ...

    Text Solution

    |

  9. A flask P contains 0.5 mole of oxygen gas. Another flask Q contains 0....

    Text Solution

    |

  10. From 200mg of CO2, 10^21 molecules are removed. How many moles of CO2 ...

    Text Solution

    |

  11. How many molecules of CO2 are present in one litre of air containing 0...

    Text Solution

    |

  12. On analyzing an impure sample of sodium chloride, the percentage of ch...

    Text Solution

    |

  13. Copper gives two oxides. On heating one gram of each in hydrogen, we g...

    Text Solution

    |

  14. The average atomic mass of copper is 63.5u. It exists as two isotopes ...

    Text Solution

    |

  15. P and Q are two elements which form P2Q3 and PQ2 molecules. If 0.15g m...

    Text Solution

    |

  16. A compound on analysis was found to contain C=34.6%, H=3.85% and O = 6...

    Text Solution

    |

  17. On heating 1.763 g of hydrated BaCI2 to dryness, 1.505g of anhydrous s...

    Text Solution

    |

  18. 1.0g of Mg is burnt in a closed vessel which contains 0.5g of O2. Whic...

    Text Solution

    |

  19. A mixture of FeO and Fe3O4 when heated in air to a constant weight gai...

    Text Solution

    |

  20. Butyric acid contains C,H,O elements. A4.24 mg sample of butyric acid ...

    Text Solution

    |