1.A certain soft drink was analyzed and found to contain 0.080M H+ . Other ingredients of the drink include sugar or, in the diet form of the drink , an artificial sweetener. What property of this acid solution is overcome by using sugar or sweetener?
2. Every day, a manufacturing plant produces 5.0X10^3 L of NaOH waste of molarity 0.030M. In order to comply with environmental regulations, this NaOH must be neutralized before being discharged as effluent. What mass of concentrated HCL will be required to neutralize it?
[HCL] =12M ; density= 1.2kg/L
Chem question!! acid/base 20 分
2009-04-07 8:31 pm
回答 (2)
2009-04-07 10:10 pm
Q1.This is to lower the glucose content which may cause obese if people drink a lot.
Q2.
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
1L = 1000cm^3 = 1dm^3
No. of moles of NaOH = (5x10^3)(0.03)
=150mol
From the equation,
No. of moles of HCl = No. of moles of NaOH = 150mol
Volume of HCl required = 150/12
=12.5L
Since 1L represent 1.2kg, mass of HCl required= 12.5x1.2 =15kg
Q2.
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
1L = 1000cm^3 = 1dm^3
No. of moles of NaOH = (5x10^3)(0.03)
=150mol
From the equation,
No. of moles of HCl = No. of moles of NaOH = 150mol
Volume of HCl required = 150/12
=12.5L
Since 1L represent 1.2kg, mass of HCl required= 12.5x1.2 =15kg
2009-04-07 9:08 pm
1. sour taste
2. 5.0X10^3X0.03 / 12X1.2=15kg
2. 5.0X10^3X0.03 / 12X1.2=15kg
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