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Ksju [112]
3 years ago
10

Choose the statement that best describes the effects of a higher or lower pH on enzymes.

Chemistry
1 answer:
matrenka [14]3 years ago
8 0
<h3>Answer:</h3>

Higher or lower pH affect the structure of the enzyme and reduces the enzyme activity.

<h3>Explanation:</h3>
  • Enzymes are biological molecules that speed up the rate of chemical reactions.
  • Enzyme activity is affected by several factors which include temperature, pH, and enzyme inhibitors.
  • Enzymes work on specific molecules known as substrates. They are substrate-specific.
  • Enzymes work best at optimum pH and temperature.
  • Higher or lower pH affects the structure and charges of an enzyme thus affecting enzyme activity.
  • Lower temperature deactivates the enzymes while higher temperatures denature the enzymes.
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32.8 g of Butane is required and 99.3 g of CO₂ is produced

<u>Explanation:</u>

The above mentioned reaction can be written as,

C₄H₁₀(g) + 13 O₂(g) → 4CO₂(g) + 5 H₂O(g)     where ΔH (rxn)= -2658 kJ

It is given that 1.5 × 10³ kJ of energy is produced, the original reaction says that 2658 kJ of heat is produced, which means that less than one mole of butane is used in the reaction.

That is

$\frac{1500}{2658}=0.564 \text { moles }    of butane reacted

Now this moles is converted into mass by multiplying it with its molar mass  = 0.564 mol × 58.122 g / mol

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Mass of CO₂ produced = 0.564 ×44.01 g /mol × 4 mol

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Thus 32.8 g of Butane is required and 99.3 g of CO₂ is produced

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