Litmus is not affected by hydracids when they are
1. In contact with water
2. Dry
3. Fused with each other
4. Mixed together and dissolved in water
1. | 7.01 | 2. | 2 |
3. | 12 | 4. | 9 |
The molar solubility of in 0.1 M solution of NaF will be:
1. | 2. | ||
3. | 4. |
Given a hypothetical reaction :
More could be produced at equilibrium by :
1. | Using a catalyst | 2. | Removing some of B2 gas |
3. | Increasing the temperature | 4. | Increasing the pressure |
When 10 ml of 0.1 M acetic acid (pKa=5.0) is titrated against 10 ml of 0.1 M
ammonia solution (pKb=5.0),
the pH at equivalence point will be:
1. | 9.0 | 2. | 6.0 |
3. | 5.0 | 4. | 7.0 |
For the reaction 2NOCl(g)⇔2NO(g)+Cl2(g), KC at 427C is \(3\times 10^{-6} \ mol\ L^{-1}\). The value of Kp will be :
1.
2.
3.
4.
The standard reduction potential for is 0.34 V.
The reduction potential at pH =14 for the above couple given is :
1. -0.22 V
2. +0.22 V
3. -0.34 V
4. +0.34 V
1. H3O+ and H2F+, respectively.
2. OH– and H2F+, respectively.
3. H3O+ and F–, respectively.
4. OH– and F–, respectively.
The following pair constitutes a buffer is:
1.
2.
3.
4.
The ionic species that has the greatest proton affinity to form stable compound is:
1.
2.
3.
4.