The ion that may be assumed to have negligible concentrat...
The ion that may be assumed to have negligible concentration in a sample of water that lathers readily with soap is?
Mg+
K+
CO22-
HCO3
Correct answer is A
Calcium and magnesium ions (particularly calcium) negatively influence cleansing power of detergents, because these form nearly insoluble salts with soap. When the water lathers readily, it means these ions are in negligible concentration in the water.
The reaction of halogens with alkanes in the presence of sunlight is an example of ...
Which of the following describes the chemical property of acids? ...
Which of the following could not be alkane? ...
What volume of 1.5M solution of KOH would contain 0.045 moles ...
3CuO(s) + 2NH3(g) → 3Cu(s) + 3H2O(I) N2(g) (i). 2NH3(g) + 3Cl2(g) → 6HCl(g) + N2(g) (ii). ...
Which of the following gases will diffuse most rapidly? [H = 1.00, C = 12.0, O = 16.0, S = 32.0, ...
Which of the following compounds would react rapidly with bromine? ...
Fats and oils can be obtained from any of the following sources except ...
The material which can be deformed permanently by heat and pressure is called a ...