10% I suppose w/w, means
10 g HNO3/100 g solution
10 g HNO3 is how many mols. That's 10/63 = ?
Then mass = volume x density or
volume = mass/density = 100/1.051 = ?
M HNO3 = mols/L
Then pH = -log(HNO3)
An aqueous solution at 25 °C is 10.0% HNO3 by mass and has a density of 1.051 g/mL. What is the pH?
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