The pH value of a solution indicates its acidity or alkalinity. A solution with a pH of 7 is ___. A. acidic B. basic C. neutral D. strongly acidic 相关知识点: 试题来源: 解析 C。pH 值表示溶液的酸碱性,pH 为 7 是中性(neutral),小于 7 为酸性,大于 7 为碱性。反馈...
The invention relates to a composition in the form of an injectable aqueous solution having a pH of between 6.0 and 8.0 and comprising at least: a basal insulin having an isoelectric point (pI) of between 5.8 and 8.5; b) and a co-polyaminoacid consisting of glutamic or aspartic units as...
Solution:In chemistry, the term "solution" refers to the mixture of two parts: solute and solvent. The solute will be present in a small amount and the solvent will be present in a larger amount compared to the solute. Based on the pH value, the solution can be classified as a base,...
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Fill in the blanks. A solution with a pH below 7 is ___, that is, there are ___ ions. Fill in the blank with the appropriate term. pH is a measure of the ___ of a solution. You have a solution that has a pH of 8 an...
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Answer to: Calculate the (H_3O^+) of a solution with pH of 4.20. By signing up, you'll get thousands of step-by-step solutions to your homework...
What is the ph of a solution with [OH^-] = 1 ? 10^-4 M? You have an aqueous solution for which [H3O+] = 2.5 x 10-4 m. What is the pH of this solution? What is the approximate pH of a 0.100M solution of NH3 (aq)? A. 5 B. 13 C. 1 D. 11 ...
pH of a solution changes from 6 to 9, what is a fold difference in [OH-] concentration?There are 2 steps to solve this one. Solution Share Step 1 An instrument for calculating bases and acids is a pH...View the full answer Step 2 Unlock Answer UnlockPrevio...
【题目】The pH of a solution describes its acidity. Each one-unit decrease in the pHmeans that the solution is 10 times more acidic. For example, a pH of 4 is10 times more acidic than a pH of 5.Cola is 104 times more acidic than water. What is the pH value of cola? 相关知识点...