What is the best description of the change that occurs when \( \mathrm{Na}_{2} \mathrm{O}(\mathr...

Channel:
PW Solutions
Subscribers:
447,000
Published on ● Video Link: https://www.youtube.com/watch?v=gnj5ZN86QTs


Duration: 3:12
1 views
1

What is the best description of the change that occurs when \( \mathrm{Na}_{2} \mathrm{O}(\mathrm{s}) \) is dissolved in water?
(a) Oxide ion accepts a pair of electrons.
(b) Oxide ion donates a pair of electrons.
(c) Oxidation number of oxygen increases.
(d) Oxidation number of sodium decreases.
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-07-03Which of the following compound can exist in aqueous solution? (i) \( \mathrm{Na}_{2} \mathrm{O}...
2023-07-03Which of the following compound liberates \( \mathrm{H}_{2} \) with cold water? (a) \( \mathrm{H...
2023-07-03Which of the following alkali metal has the highest reactivity towards water? (a) \( \mathrm{Na}...
2023-07-03The metallic luster exhibited by sodium is explained by (a) Diffusion of \( \mathrm{Na}^{+} \) (...
2023-07-03Alkali metals give colour in Bunsen flame due to : (a) Low electronegativeity (b) One electron i...
2023-07-03Following statements regarding the periodic trends of chemical reactivity of the alkali metals a...
2023-07-03Sodium does not normally react with (a) Ammonia gas (b) Ethyne (c) But-2-yne (d) Propyne
2023-07-03\( \mathrm{BeCl}_{2} \) reacts with \( \mathrm{LiAlH}_{4} \) to give (a) \( \mathrm{Be}+\mathrm{...
2023-07-03In curing cement plasters, water is sprinkled from time to time. This helps in (a) Developing in...
2023-07-03The first ionisation potential of \( \mathrm{Na} \) is \( 5.1 \mathrm{eV} \). The value of elect...
2023-07-03What is the best description of the change that occurs when \( \mathrm{Na}_{2} \mathrm{O}(\mathr...
2023-07-03The substance not likely to contain \( \mathrm{CaCO}_{3} \) is (a) Calcined gypsum (b) Seashells...
2023-07-03Which one of the following processes will produce hard water? (a) Saturation of water with \( \m...
2023-07-03Reactivity of Na with water is more that Li because of (a) Higher oxidation potential of \( \mat...
2023-07-03During electrolysis of \( \mathrm{NaCl}(\mathrm{aq}) \), using \( \mathrm{Hg} \) cathode, \( \ma...
2023-07-03Out of \( \mathrm{AgF}, \mathrm{CaF}_{2}, \mathrm{BeF}_{2} \) and \( \mathrm{MgF}_{2} \) (a) \( ...
2023-07-03The metallic luster exhibited by sodium is explained by (a) Diffusion of \( \mathrm{Na}^{+} \) (...
2023-07-03\( \mathrm{KO}_{2} \) (potassium super oxide) is used in oxygen cylinders in space and submarine...
2023-07-03In solid \( \mathrm{KHCO}_{3}, \mathrm{HCO}_{3}^{-} \)ions exist as (a) Monomers (b) Dimers (c) ...
2023-07-03\[ \mathrm{A}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{NaOH} ; \mathrm{A} \underset{400...
2023-07-03Sulphates and carbonates of alkaline earth metals are insoluble in water due to: (a) Hydration e...