then, neutral solutions exhibit pH = pOH = 6.31, acidic solutions exhibitpH less than 6.31 and pOH greater than 6.31, whereas basic solutions exhibit pH greater than 6.31 and pOH less than 6.31.
For testing if a substance is acidic or basic, which tool do we use, pH test paper or a thermometer? A. pH test paper B. Thermometer C. Both D. Neither 相关知识点: 试题来源: 解析 A。解析:pH 试纸用于检测物质的酸碱性,温度计用于测量温度。选项 B 温度计不能检测酸碱性;选项 C 两者不...
A. Voltmeter B. pH indicator C. Balance D. Ammeter 相关知识点: 试题来源: 解析 B。本题考查化学实验工具的使用。A 选项“Voltmeter”是电压表;C 选项“Balance”是天平;D 选项“Ammeter”是电流表。而检测物质是酸性还是碱性需要使用 pH 指示剂,B 选项“pH indicator”符合题意。反馈 收藏 ...
The solution is acidic if the pH is less than $ 7 $ . When the pH exceeds $ 7 $ , the solution is basic. These numbers increase on a negative logarithmic scale and describe the concentration of hydrogen ions in the solution.Glucose has neither an acidic nor a basic nature. It is con...
Which is the most acidic proton? (Image) Identify the following if acidic or basic. a. [ H + ] = 4.4 x 10 11 M b. [ H + ] = 1 x 10 5 M c. [ O H ] = 2.2 x 10 7 M d. pOH=1.4 Ascorbic acid (vitamin c) is a weak diprotic acid. What is the pH of 0.250 m as...
We often encounter covalent compounds whose molecular units contain both "H-X" bonds and non-bonding pairs. However, this does not guarantee both acidic and basic behavior in solution. In most cases, only a single reaction pathway will be present....
The aroma of Bergamot oil is often described using the following terms: lemony, citrus, grapefruit, floral, or spicy (nutmeg-cinnamon-anise). The flavor of the fruit itself is described as citric and acidic (but not quite as sour as a lemon), and bitter (somewhere between a grapefruit ...
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also supported by the finding that the acidic region encompassing residues 341–361 although being required for Ran·GTP binding is not involved in forming the covalent DST cross-link to Ran·GTP (note that no basic amino acid residue required for DST modification is found in this sequence, ...
Indicate whether the solution is acidic, basic, or neutral: {eq}\displaystyle \rm \left[ H_3O^+ \right]=5.30 \times 10^{-10} \ M, \ pH =2.22 {/eq}. Hydronium Ion: The hydronium ion is the ion of hydrogen and oxygen and it forms when a mole...