titrating an alkali against an appropriate acid
reacting an acid with trioxocarbonate (IV) salt
directing combination of the elements which make up the salt
mixing two soluble compounds containing the metallic radical and the acidic radical
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D. Is very much correct
Lemme break it down this way
We no that the only way you can prepare insoluble salt is by direct combination and also double decomposition right ??
Now let's say I meet 2 people now and ask them please what food can I take to get energy , one will say Carbohydrate food and the other say eat beans . Now don't get me wrong both answers but the. One that said beans is more accurate because I won't be able to make any mistake in it cuz I already no the food to take right ?
Likewise in this case direct combination of the element or compound will create a salt that's correct for instance you combine sodium and chlorine it'll give you the normal table salt which is soluble in water . Now when you combine metal for exam iron or lead to this same soluble salt NaCl you'll discover the Fe or Pb will not be soluble you'll easily see it in the solution so you can easy use filteration method to separate the soluble salt from the insoluble one so option C is correct but option D gave a detailed explanation of the process .
There are two ways of preparing an insoluble salt....it is either by double decomposition or by combination of constituent elements.....so,options C and D are correct..
Option d is talking about precipitation so it is more accurate
Myschool is correct
D. mixing two soluble compounds containing the metallic radical and the acidic radical is a common method to prepare insoluble salts. This process involves combining two soluble salts containing the desired cation and anion to form an insoluble salt by precipitation. The insoluble salt can then be separated from the solution by filtration. This method is known as precipitation or double decomposition. The other options mentioned, such as titrating an alkali against an appropriate acid or reacting an acid with trioxocarbonate (IV) salt, do not involve the formation of insoluble salts.
it is c we have 2ways of prepared a insoluble salt direct combo and doubpe decomposition
Salt = product of acid reaction
Soluble salt → dissolves in water
Insoluble salt → does NOT dissolve
To make insoluble salt: 
mix two soluble salts insoluble one falls down as solid
that's just the answer (key point)
Option C and D are both correct
They were just a snippet from New School Chemistry.. Page 113
Both C and D are Very much correct
There are two ways of preparing insoluble salts
1. Direct Combination - Explained in option C
2. Double Decomposition - Explaned in option D
The ground where D is more correct than C is that Direct combination can also produce Soluble salts too, but Double Decomposition must always give insoluble salts.
directing combination and direct combination are different oo 😅. want get the correct UTME opt? be like a detective
