Chemistry Some Basic Concepts of Chemistry

C₂H₅OH + KMnO₄  --> HC₂H₃O₂ +MnO₂ + KOH + H₂O is the unbalanced equation if 5g of ethanol & excess amount of aqueous KMnO4 are reacted and 5.5g of HC₂H₃O₂ result. What is the percent yield in the nearest integer? [Given: Atomic mass of H = 1, C = 12, O = 16]

The number of N atoms in 681 g of C7H5N3O6 is x * 1021. The value of x is___________.

(NA = 6.02 * 1023 mol1) (Nearest Integer)

10.0 mL of Na?CO? solution is titrated against 0.2 M HCl solution.
The following titre values were obtained in 5 readings:
4.8 mL, 4.9 mL 5.0 mL, 5.0 mL and 5.0 mL
Based on these readings, and convention of titrimetric estimation the concentration of Na?CO? solution is ________ mM. (Round off to the nearest integer).

The functional groups that are responsible for the ion-exchange property of cation and anion exchange resins, respectively, are:

The reaction 2A + B₂ → 2AB is an elementary reaction.
For a certain quantity of reactants, if the volume of the reaction vessel is reduced by a factor of 3, the rate of reaction increases by a factor of ______.

The minimum number of moles of O₂ required for complete combustion of 1 mole of propane and 2 moles of butane is

The mass of ammonia in grams produced when 2.8 kg of dinitrogen quantitatively reacts with 1 kg of dihydrogen is

The major product obtained from the following reaction is:

The correct statement with respect to dinitrogen is:

Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve $$ $10\mathrm{p}\mathrm{p}\mathrm{m}$ of iron in $$ $100\mathrm{k}\mathrm{g}$ of wheat is Atomic weight : $$ $\mathrm{F}\mathrm{e}=55.85;\mathrm{S}=32.00;\mathrm{O}=16.00$