Photo AI
What is the relative formula mass of potassium chloride, KCl? Relative atomic mass (A_r): Cl = 35.5; K = 39.1 A 36.0 B 67.4 C 74.6 D 79.0 Your answer _ - OCR Gateway - GCSE Chemistry - Question 11 - 2022 - Paper 1
Question 11
What is the relative formula mass of potassium chloride, KCl? Relative atomic mass (A_r): Cl = 35.5; K = 39.1 A 36.0 B 67.4 C 74.6 D 79.0 Your answer _
Worked Solution & Example Answer:What is the relative formula mass of potassium chloride, KCl? Relative atomic mass (A_r): Cl = 35.5; K = 39.1 A 36.0 B 67.4 C 74.6 D 79.0 Your answer _ - OCR Gateway - GCSE Chemistry - Question 11 - 2022 - Paper 1
Step 1
Calculate the relative formula mass of KCl
Answer
To find the relative formula mass of potassium chloride (KCl), sum the relative atomic masses of potassium (K) and chlorine (Cl).
Using the given relative atomic masses:
- Potassium (K) = 39.1
- Chlorine (Cl) = 35.5
The calculation is as follows:
Thus, the relative formula mass of KCl is 74.6.
Step 2