If the Eocell for a given reaction has a negative value, which of the following gives correct relationships for the values of ∆Go and Keq?
1.
2.
3.
4.
The solubility of AgCl (s) with solubility product 1.6×10–10 in 0.1 M NaCl solution would be?
| 1. | 1.26 × 10–5 M | 2. | 1.6 × 10–9 M |
| 3. | 1.6 × 10–11 M | 4. | zero |
| 1. | 40, 30 | 2. | 60, 40 |
| 3. | 20, 30 | 4. | 30, 20 |
The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is:
(Given: Charge on electron = 1.60 × 10–19 C)
1.
2.
3.
4.
Boric acid is an acid because its molecule:
| 1. | Its molecule contains replaceable H⁺ ions |
| 2. | It gives up a proton |
| 3. | It accepts OH⁻ from water, releasing a proton |
| 4. | It combines directly with a proton from a water molecule |
AlF3 is soluble in HF only in the presence of KF due to the formation of:
| 1. | K3[AlF3H3] | 2. | K3[AlF6] |
| 3. | AlH3 | 4. | K[AlF3H] |
Zinc can be coated on iron to produce galvanised iron, but the reverse is not possible because:
| 1. | Zinc is lighter than iron. |
| 2. | Zinc has a lower melting point than iron. |
| 3. | Zinc has a lower negative reduction potential than iron. |
| 4. | Zinc has a higher negative reduction potential than iron. |
The suspension of slaked lime in water is known as:
1. lime water
2. quick lime
3. milk of lime
4. washing of lime
The hybridisations of atomic orbitals of nitrogen in \(\mathrm{NO}^{+}\), \(N O_3^{-}\) and NH3 respectively are:
1.
2.
3.
4.