Question: i need help for the three questions A student needs to prepare a buffer made from HF and KF with pH 2.844. If Ka for

i need help for the three questions

A student needs to prepare a buffer made from HF and KF with pH 2.844. If Ka for HF is 7.20104, what ratio of [F][HF]is required? [F][HF]= A student needs to prepare a buffer made from HNO2 and KNO2 with pH 2.981. If Ka for HNO2 is 4.50104, what ratio of [NO2][HNO2]is required? [NO2][HNO2]= A student needs to prepare a buffer made from CH3COOH and CH3COOK with pH 4.498. If Ka for CH3COOH is 1.80105, what ratio of [CH3COO][CH3COOH]is required? [CH3COO][CH3COOH]=

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