If 0. 1 moles of na2hpo4 and 0. 1 moles of nah2po4 are mixed in water, what is the resulting ph? the pka values for phosphoric acid are 2. 1, 7. 2, 12. 4.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

the awnser is group 12