IGCSE Chemistry 0620/21/O/N/21 Q17


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17 Which row describes the properties of an acid?
property 1                        property 2
A            proton acceptor              pH less than 7
B            proton acceptor              pH more than 7
C                proton donor               pH less than 7
D                proton donor               pH more than 7

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Answer ( 1 )


    According to Bronsted-Lowry Theory, an acid is any substance that can donate a proton (H+) to another substance, hence an acid is a proton donor.

    An acid has a pH value of less than 7.

    Ans: C

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