Chemistry, 01.04.2021 07:30 musfirahkhurram

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Answer from: Maxwell2539

Acids have a pH of less than 7 and generally form H^+ when dissolved in solution. H_2SO_4 is an example of acid.

Bases have a pH of more than 7 and generally form OH^- when dissolved in solution. Ca(OH)_2 is an example of base.

Water is neutral and has a pH of exactly 7. Therefore in chemical equations it can act as acid or a base.

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution. pH is calculated by taking negative logarithm of hydrogen ion concentration.

$pH=-\log [H^+]$

pH values range from 1 to 14. Acids have a pH range from 1 to 6.9, water is neutral with pH of 7 and bases have pH ranging from 7.1 to 14.

Acids form hydrogen ions when dissolved in water and bases form hydroxide ions when dissolved in water. Water H_2O) is amphoteric and thus can behave as an acid or a base.

$H_2SO_4\rightarrow 2H^++SO_4^{2-}$

$Ca(OH)_2\rightarrow Ca^{2+}+2OH^$

Answer from: Quest

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is $1s^{2}2s^{2}2p^{6}3s^{1}$ and electronic configuration of phosphorous is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$ .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

$3na + p \rightarrow na_{3}p$

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

Electrons are transferred from atoms of to atoms of this transfer makes the sodium atoms and the

Answer from: Quest

The answer to the question is d

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