Chemistry
Choose the correct answer from the options —
(i) To increase the pH value of a neutral solution, we should add :
- An acid
- An acid salt
- An alkali
- A salt
(ii) Anhydrous iron [III] chloride is prepared by:
- Direct combination
- Simple displacement
- Decomposition
- Neutralization
Acids Bases Salts
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Answer
(i) An alkali
Reason — The pH of alkali solutions is more than 7 therefore in order to increase the pH value of a neutral solution, an alkali should be added.
(ii) Direct combination
Reason — Anhydrous iron [III] chloride is prepared by direct combination of iron and chloride as follows —
2Fe + 3Cl2 ⟶ 2FeCl3
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Related Questions
Match the following salts given below:
(i) Pb(NO3)2 from PbO
(ii) MgCl2 from Mg
(iii) FeCl3 from Fe
(iv) NaNO3 from NaOH
(v) ZnCO3 from ZnSO4
With their correct method of preparation from: A, B, C, D and E.
(A) Simple displacement
(B) Titration
(C) Neutralization
(D) Precipitation
(E) Combination
Fill in the blanks from the choices given in brackets —
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(ii) Ammonium sulphate crystals.
Give one word or a phrase for the statement :
The property by which certain hydrated salts, when left exposed to the atmosphere, lose their water of crystallization and crumble into powder.