Radius of the tube: _cm Data Collected Calculations Temperature Temperature of gas Height of the column of gas (cm) Volume of gas (cm) of gas Ratio V/T (cm/K) (°C) (K) Near 0°C Near 20°C Near 40°C Near 60°C Near 80°C Near 100°C Additional Additional Additional Additional Additional Additional *Convert from "C to Kelvin by adding 273 to the Celsius value. **Be sure to pay attention to significant figures. Approximate as 3.14.​

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.