Question

A student conducted an experiment to determine what factors are important in the rate of reaction between potassium carbonate and hydrochloric acid. The student diluted 4.000 mL of 4.000 M K₂CO₃ to 150.0 mL, then combined that solution with 150.00 mL of 2.000 M HCl at an increased temperature of 50 °C.

The student tabulated the amount of CO₂ gas collected over time and recorded the results in the columns to the left.

1. Use a rearrangement of PV = nRT to solve for the number of moles of CO₂ produced. You may assume atmospheric pressure. Enter (and fill down) your formula in column C.

Need help on equation to solve for C.

Time (min)	Volume (mL)
1	3.7
2	7.5
3	11.2
4	15
5	18.7
6	22.5
7	26.2
8	30
9	33.7
10	37.5
11	41.2
12	45
13	48.7
14	52.5
15	56.2
16	60
17	63.7
18	67.5
19	71.2
20	75

Answer 1

Th The of objective is to co, produced determine the number of moles by using pv: ORT. Where pu: DRT Here p= lat k-mol R: 0.0821 Li atm T= 296K the Given To volume Now volume convert to by number is in me "w we have to divide 1000. of moles is calculated by py: D.R. pv RT By Sube tituting all in above we will get at 3.7 m2= 3.7²103 L s) (3.7103) (0.08211 (296) = 1522*10 moles Similarly, all values of ( is calculated.

Time (min) Volume (mu) (0) 3-4*10') 3.7 ) (296) 9.082)/296)* 1.52*764 7.5 11.2 18.7 22.5 26.2 30 33.7 volume il) ID PVRTE moles) 3.9 *103 7.5*103 4.6 3.086*104 112* 163 4.608*10-4 IS #103 6.142 *104 18.7*103 7.694*10-4 27.5*10*3 9.858*10-4 26.2*183 1.07 8*103 30*103 1.234 # 103 33.7*103 1.386 4103 34.5*103 1.543 * 1019 41.2*10% 1.695*103 45*103 1.851*103 48-7*103 2003*103 54.5*103 2.160*103 56.2*103 2.312*103 60*103 2.468 *103 63.7 *103 2.6212*103 64.5 * 103 2.777 *103 37.5 412 45 48-7 14 50.5 15 56. 3 60 16 63.7 18 67.5 71.2 712*10* 3 9.929*103 20 75 75*10*3 3.086*103 moles of Co, Hence the number of calculated is