10 Questions
What is the purpose of adding ammonium chloride before adding ammonium hydroxide in the precipitation of the iron group (III) in qualitative analysis?
To decrease the concentration of –OH ions
What is the correct sequence of ligands in the order of decreasing field strength?
CO > H2O > F− > S2−
What is the correct decreasing order of basic strength of the conjugate bases CH2Br, NaOH, RO, CH3COO, and Cl?
OH > RO > CH3COO > Cl
What is the pressure of H2 (in bar) required to make the emf of a hydrogen electrode zero in pure water at 25°C?
10−14
What is the correct order of ligands in the order of decreasing field strength?
NCS− > EDTA4− > CN− > CO
What is the role of ammonium hydroxide in qualitative analysis?
To precipitate the iron group (III)
What is the effect of adding HBr to the ether?
It undergoes a substitution reaction
What is the relationship between A and C in the given reaction?
A is a reactant and C is a product
What is the identity of B and C in the given reaction?
B is HBr and C is CH2OH
What is the type of mechanism step involved in the given reaction?
Electrophilic substitution
This quiz contains questions on various chemistry topics, including enthalpy of formation, bond energies, and valencies of elements. Try to answer these questions to test your chemistry knowledge.
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