1gram of a sample of `CaCO_(3)` was strongly heated and the `CO_(2)` liberated was
Channel: Doubtnut
Date: 2020-04-19

1gram of a sample of `CaCO_(3)` was strongly heated and the `CO_(2)` liberated was absorbed iun 100mL of 0.5 M NaOH solution. Assuming 90% purity for the sample, how many mL of 0.5M HCl would be required to react with the resulting solution to reach the end point inpresence of phenolphthaein?