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Gaurav Seth 6 years, 7 months ago
You can have the idea with this similar kind of numerical.
Question: 17.4% (wt./vol.) K2SO4 solution at 27°C is isotonic to 5.85% (wt./ vol.) NaCl solution at 27°C. If NaCl is 100% ionised, what is % ionisation of K2SO4 in aq. solution?
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Yogita Ingle 6 years, 8 months ago
Solubility is a physical property of a solution. It can be defined as the measure of maximum amount of solute that can be dissolved in a quantified amount of solvent.
This property of solution depends upon the factors like:
- The nature of soluteand solvent and the interaction between them :The stronger the attractions between solute and solvent molecules, the greater will be the solubility.
- Molecular size of solute :Larger molecules are more difficult to dissolve in solvents whereas the smaller molecules dissolve easily and are more soluble in solvents.
- Polarity :Polar solvents (having bonds with different electro negativities) like Water, ethanol, formaldehyde dissolve polar solutes whereas nonpolar solvents (having bonds with similar electro negativities) like pyridine, toluene, and hexane dissolve nonpolar solutes.
- Temperature : Rise in temperature increases the solubility.
- Pressure : Rise in pressure increases the solubility.
Posted by Nitish Nitish 6 years, 8 months ago
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Yogita Ingle 6 years, 8 months ago
q = n×e = i × t , where e is charge of electron, i current in Ampere, n is number of electron and t is time in seconds
hence n = i × r/ e = 10-3 × 1/ 1.6 × 10-19 = 6.25 × 1015
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| Electromotive force (emf) | Potential Difference (Pd) |
| E.m.f is the energy supplied to the unit charge by the cell. | Potential difference is the energy dissipated as the unit charge passes through the components. |
| E.m.f is the cause. | Potential difference is the effect. |
| The emf is also present even when no current is drawn through the battery. | Potential difference across the conductor is zero in the absence of current. |
| Its unit is volt. | Its unit is volt. |
| It remains constant. | It does not remain constant. |
| It is always greater than a potential difference. | It is always less than emf. |
| It transmits current both inside and outside of the cell. | Potential difference transfer current between two points in the cell. |
| Its symbol is E. | Its symbol is V. |
| Its formula is E = I (Rtr) Rtr = total external and internal resistance. |
Its formula is V = E – Ir |
| It does not depend on circuit resistance. | It directly depends on the resistance between two points of measurement. |
| It causes in electric, magnetic, and gravitational fields. | It induces only in the electric field. |
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Yogita Ingle 6 years, 8 months ago
Phenol is an aromatic compound which is more acidic than alcohol since phenols can delocalized its electrons. Also, phenols can remove its hydrogen to make it more stable. The ion is called the phenoxide ion and it gets stability by resonance which is not found in aliphatic alcohol.
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Pratima Yadav 6 years, 7 months ago
0Thank You