why is double-indicator titration used in the analysis of soda ash?

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why is double-indicator titration used in the analysis of soda ash?

2006-12-18 04:21:46 · 3 answers · asked by deep_raven05 2 in Science & Mathematics ➔ Chemistry

3 answers

Because a suitable single indicator doesnt have the pH range required for the required pH range.

Thus a mixture of two indicators is used in the analysis of soda ash

2006-12-18 04:27:01 · answer #1 · answered by Som™ 6 · 0⤊ 0⤋

The definiton of K1 and K2 for soda is more than 10^4 so it has 2 equation point and need double-indicator.

2006-12-18 12:58:27 · answer #2 · answered by Ash 2 · 0⤊ 0⤋

the type of volatiles is such that single titration lacks the specific values necessary.

2006-12-18 13:30:46 · answer #3 · answered by tyco88 2 · 0⤊ 0⤋