How much copper can be obtained from 100 g of copper sulphate \((\text{CuSO}_4)\)?
Solution and Explanation
1 mole of \((\text{CuSO}_4)\) contains 1 mole of copper.
Molar mass of \((\text{CuSO}_4)\) = (63.5) + (32.00) + 4(16.00)
= 63.5 + 32.00 + 64.00
= 159.5 g
159.5 g of \((\text{CuSO}_4)\) contains 63.5 g of copper.
⇒ 100 g of \((\text{CuSO}_4)\) will contain \(\frac{63.5 × 100\, \text{g} }{ 159.5}\) of copper.
Amount of copper that can be obtained from 100 g \((\text{CuSO}_4)\) \(= \frac{63.5 × 100\, \text{g} }{ 159.5}\)
= 39.81 g
Top Questions on Stoichiometry and Stoichiometric Calculations
- The number of moles of CO$_2$ produced when 2 moles of C$_2$H$_6$ are completely burnt is:
- BITSAT - 2025
- Chemistry
- Stoichiometry and Stoichiometric Calculations
- How many grams of $ \text{CO}_2 $ are produced when 10 g of $ \text{C}_2\text{H}_6 $ (ethane) is completely combusted? Reaction: $ 2\text{C}_2\text{H}_6 + 7\text{O}_2 \rightarrow 4\text{CO}_2 + 6\text{H}_2\text{O} $
- BITSAT - 2025
- Chemistry
- Stoichiometry and Stoichiometric Calculations
- In the reaction \( 2\text{SO}_2 + \text{O}_2 \rightarrow 2\text{SO}_3 \), if 64 g of \(\text{SO}_2\) reacts completely, how many grams of \(\text{SO}_3\) are produced? (Molar mass of \(\text{SO}_2 = 64 \, \text{g/mol}, \text{SO}_3 = 80 \, \text{g/mol}\))
- BITSAT - 2025
- Chemistry
- Stoichiometry and Stoichiometric Calculations
- How many molecules of carbon dioxide are formed when 0.6 g carbon is burnt in air?
- MHT CET - 2025
- Chemistry
- Stoichiometry and Stoichiometric Calculations
Fortification of food with iron is done using $\mathrm{FeSO}_{4} .7 \mathrm{H}_{2} \mathrm{O}$. The mass in grams of the $\mathrm{FeSO}_{4} .7 \mathrm{H}_{2} \mathrm{O}$ required to achieve 12 ppm of iron in 150 kg of wheat is _______ (Nearest integer).} (Given : Molar mass of $\mathrm{Fe}, \mathrm{S}$ and O respectively are 56,32 and $16 \mathrm{~g} \mathrm{~mol}^{-1}$ )
- JEE Main - 2025
- Chemistry
- Stoichiometry and Stoichiometric Calculations
Questions Asked in CBSE Class XI exam
- Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions:
- \(2AgBr (s) + C_6H_6O_2(aq) \rightarrow 2Ag(s) + 2HBr (aq) + C_6H_4O_2(aq)\)
- \(HCHO(l) + 2[Ag (NH_3)_2] ^+ (aq) + 3OH^ - (aq) \rightarrow 2Ag(s) + HCOO ^- (aq) + 4NH_3(aq) + 2H_2O(l)\)
- \(HCHO (l) + 2Cu^{ 2+}(aq) + 5 OH^ - (aq) \rightarrow Cu_2O(s) + HCOO ^- (aq) + 3H_2O(l)\)
- \(N_2H_4(l) + 2H_2O_2(l) \rightarrow N_2(g) + 4H_2O(l)\)
- \(Pb(s) + PbO_2(s) + 2H_2SO_4(aq) \rightarrow 2PbSO_4(s) + 2H_2O(l)\)
- CBSE Class XI
- Oxidation Number
Figure 8.9 shows the strain-stress curve for a given material. What are (a) Young’s modulus and (b) approximate yield strength for this material?
- CBSE Class XI
- Stress-strain curve
- Arrange the bonds in order of increasing ionic character in the molecules: LiF, K2O, N2, SO2 and ClF3.
- CBSE Class XI
- Molecular Orbital Theory
- Three reasons why the author’s grandmother was disturbed when he started going to the city school.
- CBSE Class XI
- The Portrait of a lady
Two identical ball bearings in contact with each other and resting on a frictionless table are hit head-on by another ball bearing of the same mass moving initially with a speed V. If the collision is elastic, which of the following (Fig. 5.14) is a possible result after collision ?
- CBSE Class XI
- Collisions