<Tr> <Th> Denomination </Th> <Th> pH range </Th> </Tr> <Tr> <Td> Ultra acidic </Td> <Td> <3.5 </Td> </Tr> <Tr> <Td> Extremely acidic </Td> <Td> 3.5--4.4 </Td> </Tr> <Tr> <Td> Very strongly acidic </Td> <Td> 4.5--5.0 </Td> </Tr>

According to a ph scale which ph would be the strongest acid