A 0.20 M solution of the weak acid HA has a [H+1] = 1.4 ![A 0.20 M solution of the weak acid HA has a [H<sup>+1</sup>] = 1.4 10<sup>-4</sup> M.The acid ionization constant,K<sub>a</sub>,for this acid is <sup> </sup> A) 9.8 10<sup>-8</sup> B) 1.8 10<sup>-5</sup> C) 2.0 10<sup>-8</sup> D) 7.0 10<sup>-4</sup>](https://d2lvgg3v3hfg70.cloudfront.net/TB4036/11ea7f51_1ea6_8782_9ecd_396a87e5e0d4_TB4036_11.jpg)
10-4 M.The acid ionization constant,Ka,for this acid is
A) 9.8 ![A 0.20 M solution of the weak acid HA has a [H<sup>+1</sup>] = 1.4 10<sup>-4</sup> M.The acid ionization constant,K<sub>a</sub>,for this acid is <sup> </sup> A) 9.8 10<sup>-8</sup> B) 1.8 10<sup>-5</sup> C) 2.0 10<sup>-8</sup> D) 7.0 10<sup>-4</sup>](https://d2lvgg3v3hfg70.cloudfront.net/TB4036/11ea7f51_1ea6_8783_9ecd_15cabe24dcba_TB4036_11.jpg)
10-8
B) 1.8 ![A 0.20 M solution of the weak acid HA has a [H<sup>+1</sup>] = 1.4 10<sup>-4</sup> M.The acid ionization constant,K<sub>a</sub>,for this acid is <sup> </sup> A) 9.8 10<sup>-8</sup> B) 1.8 10<sup>-5</sup> C) 2.0 10<sup>-8</sup> D) 7.0 10<sup>-4</sup>](https://d2lvgg3v3hfg70.cloudfront.net/TB4036/11ea7f51_1ea6_8784_9ecd_354f4a697c88_TB4036_11.jpg)
10-5
C) 2.0 ![A 0.20 M solution of the weak acid HA has a [H<sup>+1</sup>] = 1.4 10<sup>-4</sup> M.The acid ionization constant,K<sub>a</sub>,for this acid is <sup> </sup> A) 9.8 10<sup>-8</sup> B) 1.8 10<sup>-5</sup> C) 2.0 10<sup>-8</sup> D) 7.0 10<sup>-4</sup>](https://d2lvgg3v3hfg70.cloudfront.net/TB4036/11ea7f51_1ea6_8785_9ecd_25d2932d8638_TB4036_11.jpg)
10-8
D) 7.0 ![A 0.20 M solution of the weak acid HA has a [H<sup>+1</sup>] = 1.4 10<sup>-4</sup> M.The acid ionization constant,K<sub>a</sub>,for this acid is <sup> </sup> A) 9.8 10<sup>-8</sup> B) 1.8 10<sup>-5</sup> C) 2.0 10<sup>-8</sup> D) 7.0 10<sup>-4</sup>](https://d2lvgg3v3hfg70.cloudfront.net/TB4036/11ea7f51_1ea6_8786_9ecd_09ebaefdf7eb_TB4036_11.jpg)
10-4
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