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Match the following graphical variation with their description.
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Calculate the pH of the following solutions:
1mL of 13.6M HCl is diluted with water to give 1litre of solution.
1mL of 13.6M HCl is diluted with water to give 1litre of solution.
The Ksp values of two slightly soluble salts AB and PQ2 are each equal to 4.0 × 10-18. Which salt is more soluble?
Arrange the elements N, P, O and S in the order of:
- Increasing first ionisation enthalpy.
- Increasing non metallic character. Give reason for the arrangement assigned.
In a hydrogen atom, the energy of an electron in first Bohr's orbit is $E _{ n }=-\frac{2 \pi^2 me ^4}{ n ^2 h^2}$.
What is the energy required for its excitation to Bohr's second orbit?
→What is the energy required for its excitation to Bohr's second orbit?
What are the oxidation number of the underlined elements in the following and how do you rationalise your results?
KI3
KI3
Consider the following structure:
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ {\text{O}}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \|\\\ ^1\text{C}_3-\ ^2\text{CH}_2-\ ^3\text{C}-\ ^4\text{C}_2-\ ^5\text{C}\equiv\ ^6\text{CH}$
→$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ {\text{O}}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \|\\\ ^1\text{C}_3-\ ^2\text{CH}_2-\ ^3\text{C}-\ ^4\text{C}_2-\ ^5\text{C}\equiv\ ^6\text{CH}$
- How many σ and π-bonds are present in this compound?
- Arrange carbon no. 2, 3, 5 in decreasing order of s-character.
- Which atoms have same hybrid state?
What is pOH? What is its value for neutral water at 25°C.
Describe the theory associated with the radius of an atom as it:
1. gains an electron
2. loses an electron
1. gains an electron
2. loses an electron
The pH of 0.1 M solution of cyanic acid (HCNO) is 2.34. Calculate the ionization constant of the acid and its degree of ionization in the solution.
Hydrogen reacts with nitrogen to produce ammonia according to the equation:
3H2(g) + N2(g) → 2NH3(g)
Determine How much ammonia would be produced if 100g of N2 reacts?
3H2(g) + N2(g) → 2NH3(g)
Determine How much ammonia would be produced if 100g of N2 reacts?