解析 A。“pH”是“Potential Hydrogen”的缩写,表示“氢电位”或“酸碱度”。选项 B“Power of Hydrogen”是“氢的力量”;选项 C“Proportion of Hydrogen”是“氢的比例”;选项 D“Partial Hydrogen”是“部分氢”,都不符合“pH”的含义。反馈 收藏 ...
In the field of chemistry, “pH” stands for ___. A. Power of Hydrogen B. Potential of Hydrogen C. Pressure of Hydrogen D. Presence of Hydrogen 相关知识点: 试题来源: 解析 B。“pH”是“Potential of Hydrogen”的缩写,即氢离子浓度指数。选项 A、C、D 都是错误的组合。反馈 收藏 ...
power of hydrogen potential of hydrogen proportion of hydrogen pressure of hydrogen相关知识点: 试题来源: 解析 答案:power of hydrogen。本题考查化学领域常见缩略词 pH 的含义。pH 是“氢的浓度指数”,可以理解为 power of hydrogen。其他选项都是错误的表述。反馈 收藏 ...
In chemistry, pH stands for ‘potential hydrogen’ and it refers to the level of acidity or alkalinity in a given solution. The pH scale ranges from 0 to 14. A pH of 7 is neutral, a pH less than 7 is acidic, and a pH greater than 7 is basic (alkaline). The skin’s normal pH...
rensen used the letters "p" and "q" (commonly paired letters in mathematics) simply to label the test solution (p) and the reference solution (q).[6] Currently in chemistry, the p stands for "decimal cologarithm of", and is also used in the term pKa, used for acid ...
The International Union of Pure and Applied Chemistry (IUPAC) has a slightly different pH scale based on electrochemical measurements of a standardbuffer solution. Essentially, the definition uses the equation: pH = -log aH+ where aH+stands for hydrogen activity, which is the effective concentration...
pH stands for "power of hydrogen." The "H" is capitalized because it is the hydrogen element symbol. pH is a measure of how acidic or basic an aqueous solution is. It is calculated as the negative logarithm of hydrogen ion concentration. ...
pH is a measure of the hydrogen ion activity, typically in aqueous solution. In pH, the p stands for -log10 and the H stands for hydrogen ion activity: pH = -log10aH+ In dilute solutions, the activity of hydrogen ions can be approximated by their molar concentration, and it is in...
The term 'Ph' stands for a phenyl group in organic chemistry.A phenyl group is a benzene ring, which is a six-carbon hydrocarbon ring made of... See full answer below. Learn more about this topic: Phenol | Structure, Definition & Formula ...
The pH (always written little p, big H) of a substance is an indication of how many hydrogen ions it forms in a certain volume of water. There's no absolute agreement on what "pH" actually stands for, but most people define it as something like "power of hydrogen" or "potential of...