Answer:
Compounds are pure substance consisting of two or more different atoms
Explanation:
A compound or molecule which will have least dissociation and that is not able to given hydrogen ion easily upon dissociation will also have a low value of 
.
Dissociation of the given compounds or species will be as follows.
As, chemical formula of bicarbonate is 
and due to the presence of a negative charge it is difficult to lose a positively charged hydrogen ion. This is because oppositely charged ions will be bonded by strong force of attraction.
Hence, it will not easily lose a hydrogen ion due to which bicarbonate has the lowest .
Thus, we can conclude that out of the given species bicarbonate has the lowest .
Answer:
Error percentage = 1.326% , 1.35% , 5.37%
density = mass / volume
For first sample:
density = 37.22/11.5 = 3.2365 g/ml
then percentage error = 100% - (3.2365/3.28 ) * 100 = 1.326%
For second sample:
density = 37.21/11.5 = 3.2356 g/ml
then percentage error = 100% - ( 3.2356 / 3.28 ) *100 = 1.35%
For third sample:
density = 37.25/12 = 3.104 g/ml
then percentage error = 100% - ( 3.104 / 3.28 ) *100 = 5.37%
Answer:
Vol concentrated HCl needed = 1.73 ml
Explanation:
Prep 550 ml of HCl(aq) solution with pH = 1.60 at 25°C using 8M stock concentrate.
[HCl] = [H⁺] = 10⁻¹°⁶⁰M = 0.0251M HCl(aq)
Molarity Concentrate x Volume Concentrate = Molarity Dilute x Volume Dilute
8M x Vol Conc. = 0.0251M x 550ml
Vol Conc needed = 0.0251M x 550 ml / 8M = 1.73 ml of concentrate
Mixing => to the quantity of water in the mixing flask transfer 1.73 ml of the 8M HCl concentrate solution and dilute up to but not to exceed the calibration mark on the mixing flask.
