Question

1. compare the solubility of nacl and kcl at 70 degrees using the graph

Explanation:

Step1: Recall Solubility Graphs

Typically, solubility graphs for salts like NaCl (sodium chloride) and KCl (potassium chloride) show that KCl has higher solubility than NaCl at 70°C.

Step2: Analyze the Graph (General)

In standard solubility curves, at 70°C, the solubility of KCl (g/100g water) is greater than that of NaCl. For example, NaCl solubility at 70°C is around 37 g/100g water, and KCl is around 48 g/100g water (from typical graphs). So KCl is more soluble than NaCl at 70°C.

Answer:

At 70°C, the solubility of KCl is greater than the solubility of NaCl (e.g., KCl solubility ≈ 48 g/100g water, NaCl ≈ 37 g/100g water from typical solubility graphs).