The pH of 10−2M HCl solution is 2\text { The } \mathrm{pH} \text { of } 10^{-2} \mathrm{M} \mathrm{\ HCl} \text { solution is } 2 The pH of 10−2M HCl solution is 2
The pH of a 0.01 M Na2CO3 solution is higher than 7\text { The } \mathrm{pH} \text { of a } 0.01 \mathrm{\ M} \mathrm{\ Na}_{2} \mathrm{CO}_{3} \text { solution is higher than } 7 The pH of a 0.01 M Na2CO3 solution is higher than 7
The pH of a 0.01 M NaOH is 12\text { The } \mathrm{pH} \text { of a } 0.01 \mathrm{\ M} \mathrm{\ NaOH} \text { is } 12 The pH of a 0.01 M NaOH is 12
The pH of a 10−9 M HCl solution is 9\text { The } \mathrm{pH} \text { of a } 10^{-9} \mathrm{\ M} \mathrm{\ HCl} \text { solution is } 9 The pH of a 10−9 M HCl solution is 9
