1.

How does pH play ann important role in everyday life?

Answer»

Solution :pH in Ourdigestivesyetm:
(I )ourstomachproduceshydrocloricacidwhichhelpsin thediagestionof foodwithoutharmingthe stomach.
(II )Duringindigestion, if thestomachproducestoo muchacidand thiscausespainandirritation .
(iii ) pHof thestomachfluidis approximately2.0.
ph of thesaliva :
(i) pHof thesaliva normallyrangesbetween6.5 to 7.5 .
(ii)Whenthe pH of themouthsalivafallsbelow 5.5 , theenamelgetsweathered .
(iii )Toothpastes, WHICHARE generallybasicareusedfor cleaningtheteeth that canneutralisethe excess acidand preventtoothdecary.
(ii )Citrusfruitsrequireslightly alkalinesoil , whilericerequiresacidicsoilandsugarcanerequiresneutralsoil .
pHof rain water:
(i)THe pHof rainwaterisapproximately7,whichmeansthat it is neutraland alsorepresentsitshighpurity .
(ii )If theatmosphericairis pollutedwithoxidegasesof sulphurand NITROGEN, theygetdissolvedin therainwaterand makeitspHlessthan 7.
(iii )IF thepHof rainwateris LESSTHAN 7,thenitis calledacidrain.
(iv )Whenacidrainflowsintotheriversitjowers thepHof theriverin suchriversbecomesdifficult .


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