Chemistry
Fill in the blanks from the choices given in brackets —
When a metallic oxide is dissolved in water, the solution formed has a high concentration of …………… ions. [H+, H3O+, OH-]
Related Questions
Fill in the blank:
Higher the pH value of a solution, the more …………… [acidic/alkaline] it is.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
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
Write a balanced chemical equation for the preparation of each of the following salts:
(i) Copper carbonate
(ii) Ammonium sulphate crystals.