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Write chemical reactions to show the amphoteric nature of water.
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What is the difference between the terms ‘hydrolysis’ and ‘hydration’?
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Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (i) normal water (ii) acidified water, and (iii) alkaline water? Write equations wherever necessary.
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What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?
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What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?
\[\begin{array}{cc}\ce{^+OH}\\||\\
\ce{H - C - OH}\end{array}\]
\[\begin{array}{cc}\ce{OH}\phantom{.}\\|\phantom{...}\\
\ce{H - C^+ - OH}\end{array}\]
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What is meant by the term bond order?
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Identify the reagents shown in bold in the following equation as nucleophiles or electrophiles:
\[\ce{CH3COOH + \underline{\ce{H}\overset{-}{\ce{O}}} -> CH3COO^- + H2O }\]
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Identify the reagents shown in bold in the following equation as nucleophiles or electrophiles:
\[\ce{CH3COCH3 + \underline{\overset{-}{\ce{C}}\ce{N}} -> (CH3)2C(CN)(OH)}\]
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Which of the following statements indicates that law of multiple proportion is being followed?
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One of the statements of Dalton’s atomic theory is given below: “Compounds are formed when atoms of different elements combine in a fixed ratio”
Which of the following laws is not related to this statement?
(i) Law of conservation of mass
(ii) Law of definite proportions
(iii) Law of multiple proportions
(iv) Avogadro law
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If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in whole number ratio.
Is this statement true?
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If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in whole number ratio.
If yes, according to which law?
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If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in whole number ratio.
Give one example related to this law.
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Define the law of multiple proportions. Explain it with two examples. How does this law point to the existence of atoms?
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A box contains some identical red coloured balls, labelled as A, each weighing 2 grams. Another box contains identical blue coloured balls, labelled as B, each weighing 5 grams. Consider the combinations AB, AB2, A2B and A2B3 and show that law of multiple proportions is applicable.
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Which of the following options represents the correct bond order?
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Which of the following have identical bond order?
(i) \[\ce{CN-}\]
(ii) \[\ce{NO+}\]
(iii) \[\ce{O^{-}2}\]
(iv) \[\ce{O^{2-}2}\]
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Species having same bond order are:
(i) \[\ce{N2}\]
(ii) \[\ce{N^{-}2}\]
(iii) \[\ce{F^{+}2}\]
(iv) \[\ce{O^{-}2}\]
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Using molecular orbital theory, compare the bond energy and magnetic character of \[\ce{O^{+}2}\] and \[\ce{O^{-}2}\] species.
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What is the effect of the following processes on the bond order in \[\ce{N2}\] and \[\ce{O2}\]?
(i) \[\ce{N2 -> N^{+}2 + e-}\]
(ii) \[\ce{O2 -> O^{+}2 + e-}\]
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