Although a single drop of 2 M HCl reduces the pH of 100 mL of water by 4 pH units (from 7 to 3), there is no change in the pH of the buffer when a drop of 2 M HCl is added to 100 mL of this buffer solution. Thus, the pH of the buffer solution is truly buffered against the effect of small amounts of acid or base.
How long babies nurse also depends on their age. As babies get older, they become more efficient, so they may take about 5-10 minutes on each side, whereas newborns may feed for up to 20 minutes on each breast.
WHO recommendations for breastfeeding. 1  Breastfeeding should begin within an hour after birth. 2  Breastfeeding should be on demand, day and night. 3  Bottles or dummies should be avoided. 4  Exclusive breastfeeding (only breast milk given-not even water consumed) should occur until the baby is 6 months.