Moles of glucose = 14.7/180.15 = 0.0816moles.
Mass of solvent(water) = density of water x volume = 1 x 150 g = 150g
Mass of water in Kg = 0.15 Kg
Molality of glucose = moles of glucose/ mass of water
= 0.0816 / 0.15 = 0.54 molality.
Yes !
molar mass glucose ( C₆H₁₂O₆) = 12 x 2 + 1 x 12 + 16 x 6 = 180 g
molar mass water ( H₂O) = 1 x 2 + 16 = 18 g
hope this helps!
Answer:
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pH is an important parameter for many reactions to take place in solution and in biological systems. It is related to the concentration of H⁺ ions through the following expression:
pH = 1/[H⁺] = -log [H⁺]
Wanting to know the pH of a solution is equivalent to knowing the amount of hydrogen ions present. But the pH scale is more convenient than the concentration scale because pH usually takes values between 0 and 14.
- When pH < 7 the solution is acid.
- When pH = 7 the solution is neutral (like pure water).
- When pH > 7 the solution is basic.
