Which of the following statements about enzymes is correct? ► View Available Hint(s) After the reaction the product stays bonded to enzyme. Enzymes can change the shape of their active site to fit their substrates better. Activation energy is raised after substrates form the enzyme-substrate complex. O The substrate fits into the active site of enzymes like a key fits into a lock.

Classify each chemical reaction: CuSO₂ (aq) + ZnCrO₂ (aq) → ZnSO₂ (aq) + CuCrO₂ (s) reaction H,CO,(aq) → H,O(1) + CO,(g) HI (aq) + NaOH(aq) Nal (aq) + H₂O(1) HBr(aq) + NaOH(aq) → NaBr(aq) +H,O(l) Explanation Check type of reaction (check all that apply) combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition X precipitation combustion acid-base precipitation combustion acid-base precipitation combustion acid-base precipitation combustion acid-base S © 2023 McGraw Hill LLC. All Rights R

// IN B R tion 8 of 25 2 NaCl(aq) + K, S(aq) → Na, S(aq) + 2 KCI(aq) (3)°0E + (s)1D – (s)*(*01) O acid-base neutralization O acid-base neutralization O precipitation O precipitation xopə1 O none of these reaction types хораг none of these reaction types KOH(aq) + AgNO, (aq) KNO, (aq)+A£OH(s) CaO(s) + CO,(g) → CACO3(s) → CaCO,(s) O acid-base neutralization O acid-base neutralizatin O precipitation O precipitation хорәл none of these reaction types xopə1 O O none of these reaction types Ba(OH), (aq) +2 HNO, (aq) Ba(NO,),(aq) + 2 H,O(I) O acid-base neutralization O precipitation MacBook Pro Q Search or enter website name | & %24 4 %23 7. 5. 6. { 3. E. K. C.

Copper(II) sulfate, CuSO4, reacts with sodium hydroxide, NaOH, in a double displacement reaction. The products are a precipitate of copper (II) hydroxide, Cu(OH)2, and an aqueous solution of sodium sulfate, Na2SO4. CuSO4(aq) + 2NaOH(aq) → Cu(OH)2(s) + Na2SO4(aq) 50.0 mL of 0.300 mol/L CuSO4 solution are mixed with an equal volume of 0.600 mol/L NaOH. The initial temperature of both solutions is 21.4°C. After mixing the solutions in a calotimeter, the highest temperature reached is 24.6 oC. Determine the change in the enthalpy of the reaction. Then write the thermochemical equation.