List of top Chemistry Questions on Stoichiometry and Stoichiometric Calculations asked in TS EAMCET

A solution is prepared by reacting \(500\) mL of \(0.2\) M \(\mathrm{KMnO_4}\) with \(500\) mL of \(0.2\) M \(\mathrm{KBr}\) solution in basic medium. What are the concentrations of \(\mathrm{KBr}\) and \(\mathrm{KBrO_3}\) respectively in the resultant solution?

2.9 g of a gas (molar mass \(40\,g\,mol^{-1}\)) at \(T(K)\) occupied the same volume as 0.184 g of dihydrogen at \(17^\circ C\) at the same pressure. The value of \(T(K)\) is:

10 L vessel contains He (0.4 g), O$_2$ (1.6 g), N$_2$ (1.4 g). Find partial pressure of He at 300 K.

Observe the following reaction and identify the correct relationships from the following \[ xP_4(s)+yOH^{-}(aq)+zH_2O(l)\rightarrow aPH_3(g)+bH_2PO_2^{-}(aq) \] I. $x+y+z=6$ II. $x=a$ III. $x+y+z=3+a+b$ IV. $a-z+b=1$

$\text{KMnO}_4$ oxidizes $\text{M}^{2+}$ to $\text{M}^{4+}$ in acid medium. $500\text{ mL}$ of $0.02\text{M}$ $\text{M}^{2+}$ solution requires $500\text{ mL}$ of $x\text{ M}$ $\text{MnO}_4^-$ solution for complete oxidation. The value of $x$ is:}

2 moles of ammonia gas is present in a 5.0 L flask at \(27^\circ C\). The pressure of it (in atm) using van der Waals equation is: \[ a=4.17,\qquad b=0.0371,\qquad R=0.0821 \]

$100 \text{ mL}$ of $0.05 \text{ M } \text{Cu}^{2+}$ aqueous solution is added to $1 \text{ L}$ of $0.1 \text{ M } \text{KI}$ solution. The number of moles of $\text{I}_2$ and $\text{Cu}_2\text{I}_2$ formed are respectively

In which of the following, oxidation state of nitrogen is lowest?

A hydrocarbon containing C and H has 75% (by weight) of carbon. 32g of this hydrocarbon was completely burnt in air. What is the weight (in kg) of $CO_2$ formed?

The volume (in L) of CO2(g) obtained at STP by completely burning 10 g of 90% pure CaCO3 is approximately (molar volume of CO2 at STP=22.7L) (Assume CO2 as an ideal gas) (CaCO3=100u)

At 27$^\circ$C, 100 mL of 0.05 M Cu$^{2+}$ solution is added to 1 L of 0.1 M KI. Find [KI] in resultant solution.

4.0 g of a mixture containing Na₂CO₃ and NaHCO₃ is heated to 673K. Loss in mass of the mixture is found to be 0.62g. The percentage of sodium carbonate in the mixture is