A water contains 110 mg/L carbonate ion and 80 mg/L bicarbonate ion at a pH of 10. Which of the following is /are true?
1
Exact Alkalinity at 25 ° C is 253.9 g/lit
2
Approximate Alkalinity ignoring Hydrogen and hydroxide ion is 248.9 mg/lit
3
Percentage error in approximation is 1.969 %
4
Approximate alkalinity ignoring Hydrogen and hydroxide ion is 248.9 g/lit