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Which solution has a pH greater than 7?
basic
The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.
When pH value is greater than 7 it is an?
alkaline
The pH scale ranges from 0 to 14, with 7 being neutral. pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic).
Which of the following has pH less than 7?
Explanation: The compound (NH4) CO3 will have pH less than 7 because it will dissociate to form carbonic acid. Carbonic acid can further dissociate t form H+ ions which will further lower the pH.
Which of the following have pH 7?
pure water has pH 7 .
Which element has a pH of 7?
The pH scale
| Increasing pH (Decreasing Acidity) | Substances |
|---|---|
| 7 (neutral) | Water, tears |
| 7.5 | Human blood |
| 8 | Seawater |
| 9 | Baking soda, antacids |
What do pH values above 7 represent?
On the pH scale, pH values below 7 represent acidic solutions (hydrogen ion activity greater than hydroxide ion activity) while values above 7 represent basic solutions. At pH = 7, hydrogen ion and hydroxide ion activity are equal (Table 1).
What substance has a pH greater than 7?
An acid substance has a pH of less than 7. An alkaline substance has a pH greater than 7, and a perfectly neutral substance has a pH of exactly 7.
What is it called when the pH is greater than 7?
pH stands for the potential of hydrogen present in liquids. The pH scale ranges from 1 to 14; neutral is 7. A pH higher than 7 is called alkaline, while a pH lower than 7 is called acidic.
What type of solution has a greater pH than 7?
At 25 °C, solutions with a pH less than 7 are acidic, and solutions with a pH greater than 7 are basic. Solutions with a pH of 7 at this temperature are neutral (e.g. pure water ).