Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- 3 g of an oxide of a metal is converted to chloride completely and it yielded 5 g of chloride. The equivalent weight of the metal...
- An unknown element forms an oxide. What will be the equivalent weight of the element if the oxygen content is 20% by weight?
- A bivalent metal has an equivalent mass of 32. The molecular mass of the metal nitrate is
- If we consider that 1 6 , in place of 1 12 , of the mass of a carbon atom is taken to be the relative atomic mass unit, the mass...
- If molecular weight of KMnO_4 is M, then its equivalent weight in acidic medium would be
- The standard adopted for the determination of atomic weight of elements is based on
- An alkaloid contains 17.28% of nitrogen and its molecular mass is 162. The number of nitrogen atoms present in one molecule of...
- The equivalent weight of a solid element is found to be 9. If the specific heat of this element is 1.05 J g^ -1 K^ -1 (i.e. 0.25...
- 1.520 g of the hydroxide of a metal on ignition gave 0.995 g of the oxide. The equivalent weight of metal is
- The relative abundance of two isotopes of atomic weight 85 and 87 is 75% and 25% respectively. The average atomic weight of the...
- Given that the abundances of isotopes ^ 54 Fe, ^ 56 Fe and ^ 57 Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe is
- For the reaction, Na _2 CO _3 + 2 HCl NaCl + H _2 O + CO _2, equivalent weight of Na_2CO_3 is
- Equivalent weight of a bivalent metal is 37.2. The molecular weight of its chloride is
- The percentage of an element M is 53 in its oxide of molecular formula M_2O_3. Its atomic mass is about
- The equivalent weight of a certain trivalent element is 20. Molecular weight of its oxide is
- 4 g of copper was dissolved in concentrated nitric acid. The copper nitrate solution on strong heating gave 5 g of its oxide. The...
- If two compounds have the same empirical formula but different molecular formulae, they must have [RPET 2008]
- Equivalent weight of an acid [UP SEE 2004]
- An organic compound containing C and H has 92.3% of carbon; its empirical formula is
- Match the items in Column-I with their values in Column-II: | Column-I | Column-II | |---|---| | (A) Vapour density (V.D.) of SO...
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