Plan an experiment to classify vinegar as acidic, basic, or neutral using a pH indicator. Describe what you would expect to observe. (I:1)单项选择题
A
Blue color, indicating basic
B
Green color, indicating neutral
C
Red color, indicating acidic
D
No color change, indicating neutral
登录即可查看完整答案
我们收录了全球超50000道真实原题与详细解析,现在登录,立即获得答案。
类似问题
Which indicator would be most suitable for a strong acid-strong base titration: Methyl orange (pH transition range: 3.1 - 4.4) or Cresol red (pH transition range: 7.2 - 8.8)?
An indicator is a chemical that appears one color in acidic solution, and another color in basic solution. Identify the color that the indicator in this experiment will appear in acid and in base. 1: color in acid 2: color in base
Which indicator(s) below turn blue in a basic solution?
Section A: Read the text and answer the questions. Brutalism is an architectural style, introduced in the 1950s. It uses exposed concrete to create geometric structures with a grey appearance. Concrete buildings are often criticised as cold and ugly, lacking the warmth of stone or the smooth feel of steel. However, concrete, as a building material, has unique characteristics. It is extremely flexible when wet, and is adapted to create interesting shapes. Many urban public buildings, such as universities, have also used concrete as the main material to indicate strength and permanence. Instead of keeping Brutalist buildings, many are being demolished to make space for modern styles. However, this does not acknowledge the cultural history of these buildings, and is not sustainable. Fill in the gap with ONE WORD from the paragraph. 1. Brutalist architecture included exposed concrete, which gave a cold Answer Question 1[input] .
更多留学生实用工具
希望你的学习变得更简单
加入我们,立即解锁 海量真题 与 独家解析,让复习快人一步!