Calcium phosphide is used in fireworks, torpedoes, self-igniting naval pyrotechnic flares, and various water-activated ammunitions. The reaction of calcium phosphide is represented by the following equation: Ca3P2(s) + 6H2O(1) → 3Ca(OH)2(s) + 2PH; (g)A,H = -717.4kJ When 5.0 g of calcium phosphide is placed into 150 mL of calorimeter water, it is expected that the calorimeter water will: Select one: decrease in temperature because this is an endothermic reaction. decrease in temperature because this is an exothermic reaction. increase in temperature because this is an exothermic reaction. O increase in temperature because this is an endothermic reaction.

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Qualitative analysis of anions

Qualitative analyses are mainly used for the determination of anions and cations present in the given sample. This analysis is a type of analytical chemistry that is used to determine the elemental composition present in the inorganic compounds via different reagents.