For a certain reaction, the rate = [X][Y]^2. Which one of the following statemen

Question

For a certain reaction, the rate = [X][Y]^2. Which one of the following statements is correct? a. The reaction is second order with respect to Y. b. The reaction is first order with respect to both X and Y. c. The reaction is second order with respect to X. d. With an increase in temperature, the recorded time for completion of the reaction increases Which of the following cations (0.1M) can be precipitated as a sulfide at pH 0.5 and also as a hydroxide on addition of 6M NH_3? a. Cu^2+ b. Bi^3+ c. Fe^2+ d. Ni^2+ Select the answer choice that best fits for the following equation: Mg_3(PO_4)_2 (s) 3 Mg^2+(aq) + 2 PO_4^3-(aq) K is the solubility equilibrium constant, and k is the reaction rate constant. a. K = [3Mg^2+][2PO_4^2] b. rate = k* [Mg^2+]^3[PO_4^3-]^2 c. k = [Mg^2+]^3[PO_4^3-]^2/[Mg_3 PO_4] d. K = [Mg^2+]^3[PO_4^3-]^2 Which of the following is not a colligative property? a. Osmotic pressure. b. Boiling point elevation. c. Freezing point depression. d. All of the above are colligative properties. Which condition is used in the precipitation of Group III cations with S^2? a. neutral b. acidic c. basic d. pH = 0.5 How are Group I cations precipitated? a. Addition of 6 M HCI(aq). b. Alkaline conditions with addition of thioacetamide. c. Addition of 6 MH_2SO_4(aq) d. Acidic conditions with addition of thioacetamide.

Explanation / Answer

6)
reaction is 2nd order with Y and 1st order with X

this makes a correct and b , c wrong

d is wrong because increasing temperatrure, increases rate of reaction and hence the recorded time for completion of reaction decreases
Answer: a

I am allowed to answer only 1 question at a time

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