What may be expected to happen when phosphine gas is mixed with chlorine gas?
What may be expected to happen when phosphine gas is mixed with chlorine gas?
(a) The mixture only cools down
(b) PCl3 and HCl are formed and the mixture warms up
(c) PCl5 and HCl are formed and the mixture cools down
(d) PH3∙Cl2 is formed with warming up.
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(c) : Phosphine burns in the atmosphere of chlorine and forms phosphorus pentachloride.
PH3 + 4Cl2 → PCl5 + 3HCl
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