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Factors Affecting Boiling Point

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Question

Calculate the volume of 0.1M naOH solution required to neutralise the solution produced by dissolving 1.1g of P4O6 in water

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Solution

$P_{4} O_{6} + 6 H_{2} O \to 4 H_{3} P O_{3} 4 H_{3} P O_{3} \to 8 H^{+} + 4 H P {O_{3}}^{2 -} (\sin c e H_{3} P O_{3} i s a d i p r o t i c a c i d) M o l a r m a s s o f P_{4} O_{6} = 220 g F r o m t h e e q u a t i o n s w e c o m e t o k n o w t h a t 220 g o f P_{4} O_{6} g i v e 8 H^{+} w h i c h n e e d 8 N a O H f o r i t s n e u t r a l i s a t i o n . 1.1 g o f P_{4} O_{6} = \frac{8}{220} \times \frac{1.1}{1} = 0.04 m o l e o f N a O H 0.04 m o l e o f N a O H = 0.04 L o f 1 M N a O H = 0.4 L o f 0.1 M N a O H T h u s t h e v o l u m e o f N a O H = 0.4 L = 400 m l$

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