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Calculate the vapour pressure of water for this solution and its relative lowering.
Solution 9: \begin{tabular}{l} \hline $\mathrm{P} \square=23.8 \mathrm{~mm} \mathrm{Hg}$ \\ $\mathrm{W} 2=50 \mathrm{~g}, \mathrm{M}_{2}($ urea $)=60 \mathrm{~g} \mathrm{~mol}^{-1}$ \\ $\mathrm{w}...
Heny’s law constant for in water is at . Calculate the quantity of in of soda water when packed under pressure at .
Solution 7: $$ \mathrm{KH}=1.67 \times 10_{8} \mathrm{~Pa} $$ $$ \begin{array}{l} \hline P_{A}^{o}=450 \mathrm{~mm}, P_{B}^{o}=700 \mathrm{~mm}, P_{\text {total }}=600 \mathrm{~mm} \\ \text { As...
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes: (i)
Ans: The complex will be $\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{8}\right]^{3}$. Oxidation state of cobalt will be $=x-6=-3$ The oxidation state is $=+3$ Coordination number...
Discuss the nature of bonding in metal carbonyls.
Ans: The carbon metal linkages in metal carbonyls are characterized by both s and p. M-Ca bond consists of a donation into an empty metal orbital of a lone pair of electrons on the carbonyl carbon....
What is spectrochemical series? Explain the difference between a weak field ligand and a strong field ligand.
Ans: In $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3 v}$ the oxidation state of $\mathrm{Cr}$ is in $+3$ oxidation state, which will cause the configuration of $\mathrm{Cr}$ as...
Using IUPAC norms Write the systematic names of the following:
(i) $\quad\left[\mathrm{CO}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}$ Ans: The IUPAC name of the compound is Hexaamminecobalt(III) chloride. (ii)...
Calculate the mass of urea (NH2CONH2) required in making of molal aqueous solution.
Solution 4: $0.25$ molal aqueous solution to urea means that Moles of urea $=0.25$ mole Mass of solvent $(\mathrm{NH} 2 \mathrm{CONH} 2)=60 \mathrm{~g} \mathrm{~mol}^{-1}$ $\therefore 0.25$ mole of...
Calculate the molarity of each of the following solution: (a) of in of
solution (b) $30 \mathrm{~mL}$ of $0.5 \mathrm{M} \mathrm{H}_{2} \mathrm{SO}_{4}$ diluted to $500 \mathrm{~mL}$. Solution 3: (a) Molar mass of $\mathrm{Co}\left(\mathrm{NO}_{3}\right)_{2}, 6...
Calculate the mole fraction of benzene in solution containing by mass in carbon tetrachloride.
Solution 2: $30 \%$ by mass of $\mathrm{C} 6 \mathrm{H} 6$ in $\mathrm{CCl} 4 \Rightarrow 30 \mathrm{~g} \mathrm{C} 6 \mathrm{H} 6$ in $100 \mathrm{~g}$ solution $\therefore$ Number of moles of...
Calculate the mass percentage of benzene and carbon tetrachloride if of benzene is dissolved in of carbon tetrachloride.
Solution Mass percentage of $$ \begin{array}{l} C_{6} H_{6}=\frac{\text { Mass of } \mathrm{C}_{6} \mathrm{H}_{6}}{\text { Total mass of the solution }} \times 100 \% \\ =\frac{\text { Mass of }...
Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amorphous.
(i) Tetra phosphorus decoxide $\left(\mathrm{P}_{4} \mathrm{O}_{20}\right)$ (ii)Ammonium phosphate $\left(\mathrm{NH}_{4}\right)_{3} \mathrm{PO}_{4}$ (iii) $\mathrm{SiC}$ (iv) $\mathrm{I}_{2}$ (v)...
What makes a glass different from a solid such as quartz? Under what conditions could quartz be converted into glass?
Ans: The arrangement of the constituent particles makes glass different from quartz. In glass, the constituent particles have short range order, but in quartz, the constituent particles have both...