If a compound has a molar absorptivity of 200 L/(mol·cm) and a concentration of 0.01 mol/L, what is the absorbance at a path length of 1 cm?
Practice Questions
1 question
Q1
If a compound has a molar absorptivity of 200 L/(mol·cm) and a concentration of 0.01 mol/L, what is the absorbance at a path length of 1 cm?
0.2
2
20
0.02
Using Beer-Lambert Law (A = εlc), A = 200 L/(mol·cm) * 0.01 mol/L * 1 cm = 2.
Questions & Step-by-step Solutions
1 item
Q
Q: If a compound has a molar absorptivity of 200 L/(mol·cm) and a concentration of 0.01 mol/L, what is the absorbance at a path length of 1 cm?
Solution: Using Beer-Lambert Law (A = εlc), A = 200 L/(mol·cm) * 0.01 mol/L * 1 cm = 2.
Steps: 5
Step 1: Identify the values given in the problem. The molar absorptivity (ε) is 200 L/(mol·cm), the concentration (c) is 0.01 mol/L, and the path length (l) is 1 cm.
Step 2: Write down the Beer-Lambert Law formula: A = εlc.
Step 3: Substitute the values into the formula: A = 200 L/(mol·cm) * 0.01 mol/L * 1 cm.
