For the equilibrium that exists in an aqueous solution of nitrous acid (HNO2, a weak acid) ... [H+][NO2. –]. [HNO2]. PAGE: 14.1. 2. Which of the following is a conjugate ... Using the following Ka values, indicate the correct order of base strength. HNO2. Ka = 4.0 × 10–4 .... Calculate the [H+] in a solutionthat has a pH of 11.70.
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