The properties of these molecules, therefore, vary with the acidity of the solution they are in. Answer and Explanation: An acid has a pH lower than 7. pH is a measure of the number of protons (H{eq}^+ {/eq}) in a solution, as represented by the following eq...
For neutrality, [H+] must be equal to [OH-]. This means these quantities must both equal 10-7M. If we put [H+] = 10-7M into the equation for pH: pH = -log10[H+] we get pH = 7 for neutrality. Acid and Base pH Acid solutions have pH < 7. pH values lower than 0 are ...
Why is U-A stronger than T-A base pairs? What are the properties that influence the acidity of a substance? Why do acids taste sour? Why is there a need for a very strong base to encourage nucleophilic attack in intramolecular? ...
than 7 is acidic and a pH above 7 is alkaline. Scanning the data, you can see that water in this region tends to be hard (alkaline). Too high a pH means the water is unusable or needs expensive treatment to make it usable (Reference: C. E. Nichols and V. E. Kane,Union Carbide...
After calibration, pH meters will typically display the slope of the electrode in either mV/pH (i.e. the Nernst slope), as a percentage, or both. We are often asked what this percentage, termed the electrode efficiency, actually means. ...
When a solution or substance is equal to or greater than 12.5 pH levels, it is considered high in alkaline as well as a corrosive waste. This means it is a corrosive hazardous base as it is high in alkalinity. When measured on the pH scale, anything above a 7 on the pH scale is co...
When the alkalinity levels are high, it means that there is an excessive amount of bicarbonate ions in the water. These bicarbonate ions act as a buffer against changes in pH and can push the pH level above the desired range, resulting in a high pH in the swimming pool. To address high...
T h e underlin e d phras e "bir d spotter" in pa agraph 3 means" ___”. A. a person who loves birds B. a person who keens birds C. a person who watches birds D. a person who protects birds4.What can w e learn from th e story? A. W e shoul d always follow th ...
When water has a pH level less than 6.5, it may be considered “acidic, soft, and corrosive.” This means it may potentially leach metal ions such as iron, manganese, copper, lead, and zinc from aquifers, plumbing fixtures, and piping, plus contain certain toxic metals and have a sour ...
磷酸盐缓冲液(pH6.6)取磷酸二氢钠1.74g、磷酸氢二钠2.7g与氯化钠1.7g，加水使溶解成400ml，即得。磷酸盐缓冲液(含胰酶)(pH6.8)取磷酸二氢钾6.8g,加水500ml使溶解,用0.1mol/L氢氧化钠溶液调剂pH值至6.8；另取胰酶10g，加水适量使溶解，将两液混合后,加水稀释至1000ml，即得。磷酸盐缓冲液(pH6....