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ASHA 777 [7]
2 years ago
14

Identify each of the highlighted materials as an element, a compound, or a mixture, and explain your reasoning.

Chemistry
1 answer:
Reika [66]2 years ago
4 0

Answer:

These are compounds.

Explanation:

As it is formed by chemically bonding of two elements C ( carbon) and H (hydrogen) .

  1. Its not a mixture because mixture is Just dispersed of diferrent elements or a compound which are not in fix ratio
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Answer:

P_H =2.86

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Explanation:

first write the equilibrium equaion ,

C_3H_6O_3  ⇄ C_3H_5O_3^{-}  +H^{+}

assuming degree of dissociation \alpha =1/10;

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concentration of C_3H_6O_3 = c-c\alpha

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\alpha is very small so 1-\alpha can be neglected

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K_a = {c\alpha \times \alpha}

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P_H =- log[H^{+} ]

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[H^{+} ] =0.0014

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