Litmus (pH 5-8)

Litmus, CAS : 1393-92-6

Litmus, a natural pH indicator, has several applications in secondary school studies. In chemistry, it is used to determine the acidity or alkalinity of a solution. Litmus paper turns red in acidic solutions and blue in basic solutions, allowing students to classify substances as acids or bases. This aids in understanding the concept of pH and performing simple acid-base titrations. In biology, litmus paper can be used to test the pH of biological samples or to investigate the effect of pH on enzyme activity. The use of litmus enhances students' understanding of pH, acid-base chemistry, and its relevance in various scientific fields.

石蕊是一種天然 pH 指示劑，在中學研究中有多種應用。 在化學中，它用於確定溶液的酸性或鹼性。 石蕊試紙在酸性溶液中變紅，在鹼性溶液中變藍，使學生能將物質分類為酸或鹼。 這有助於理解 pH 的概念並進行簡單的酸鹼滴定。 在生物學中，石蕊試紙可用於測試生物樣本的pH值或研究pH值對酵素活性的影響。 石蕊的使用可以增強學生對 pH 值、酸鹼化學及其在各個科學領域的相關性的理解。