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What volume (to the nearest 0.1 mL) of 6.00-M NaOH must be added to 0.400 L...

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Chemistry

What volume (to the nearest 0.1 mL) of 6.00-M NaOH must be addedto 0.400 L of 0.250-M HNO2 to prepare a pH = 4.30buffer?

What volume (to the nearest 0.1 mL) of 5.50-M HCl must be addedto 0.250 L of 0.200-M K2HPO4 to prepare a pH= 7.10 buffer?

Answer & Explanation Solved by verified expert
4.1 Ratings (584 Votes)
The reaction between NaOH and HNO2 can be writtenasMoles of HNO2 is 04 x 025 01NaOH HNO2 NaNO2 H2O ICE tableinitial 600 x x1mL 01 0 0 moldelta 600x1 600x1 600x1    See Answer
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