Problems 1. What is the normality of a solution of H2SO4 if it has a specific gravity of 1.84 and contains 95.0% by weight. How many millimoles are contained in each milliliter? 2. If 30.00 ml of KHC204 H2C204 2H20 are dissolved, diluted in 1000ml, and it is found that 40.00 ml are neutralized by 20.00 mL of a solution of KOH. What is the normality of the alkali solution? 3. A mixture of 46.32 g of pure KOH and 27.64 g of NaOH is dissolved in water and diluted to 1000 ml. What volume of 1.022 N HCI is required to neutralize 50.00 mL of the solution? What volume of 1.022 M H2504 is required to neutralize 50.00 ml of the solution? 4. A 500-ml volumetric flask contains 150 mL of 0.200N H2S04. By adding a more concentrated H2504, the solution is brought up to the mark. After mixing, it is found to be 0.150 M. What was the N of the acid added? 5. What is the equivalent weight of a certain organic acid if 44.00 mL of NaOH solution (1.000 mL = 1.100 mL HCI = 0.01001 g CaCO3) are required to neutralize 0.5192 g of the acid? 6. Caustic potash that has been exposed to air is found on analysis to contain 90.00% KOH, 2.38% K2CO3 and 7.62% H2O. What weight of residue will be obtained if 1.00 g of this sample is added to 46.00 ml of 1.00 N HCI and the resulting solution, after neutralization with 1.070N KOH is evaporated to dryness? 7. In the analysis of a 2.000 g sample of lime by titration with H2S04, what must be the normality of the acid so that the percentage of Ca may be found by dividing the net volume of acid required by 4? 8. A sample known to consist of NaOH orNaHCO3, or Na2CO3 or possible compatible mixtures of these, together with inert matter. With methyl orange, a 1.10 g sample requires 31.40 mL of HCI (of which 1.00 mL = 0.0140 g Cao). With phenolphthalein, the same weight of sample requires 13.30 ml of the acid. Calculate the percentage of inert matter in the sample.