Explain how the calculated molarity of the potassium permanganate would be affected by each of the following experimental errors. In each case, you must also state if the calculated molarity is higher or lower than the actual morality.
a) Some sodium oxalate was spilled after it had been weighed out on the analytical balance.
b) Prior to its use, the pipet has not been rinsed with the standard sodium oxalate solution.
c) The Erlenmeyer flask was rinsed with the sodium oxalate instead of deionized water before the 25.00 mL solution was measured into it.
d) The endpoints were repeatedly overshot.