# Exp.

% recov. Th H₂SO₄

% recov. Th HCl

1

2.1

3.8

2

48.7

35.3

3

5.1

5.8

4

70.0

81.7

5

5.5

8.3

6

64.9

43.1

7

2.8

2.2

8

47.8

68.4

9

5.4

6.1

10

66.2

83.8

11

5.1

6.9