C8 Acid, Base & Salts
A student is testing substance P & Q as shown. The result turns the Universal Indicator blue. Can you predict substance P & Q?
Any ammonium salt and sodium hydroxide! The reaction between both will cause formation of ammonia, that causes UI to turn blue.
Between zinc oxide and nitrogen dioxide, which can be used to neutralise an acidic solution?
Magnesium oxide! We need alkaline to neutralise acidic solution. Nitrogen dioxide is related to acid rain, remember?
Kifayat arm's stings from the bite of wasp as it slightly alkaline. Which substance should be used to neutralise the bite?
Lime juice. As the bite is already alkaline, something acidic will neutralise it. Why can't Kifayat use battery acid?