Which one of the following substances will have both dispersion forces and dipol

Question

Which one of the following substances will have both dispersion forces and dipole-dipole forces? H_2 CO_2 HCl BCl_3 Br_2 Which one of the following substances is expected to have the lowest melting point? BrI CsI LiI NaI RbI Which one of the following is a buffer solution? 0.40 M HCN and 0.10 KCN 1.0 M HNO_3 and 1.0 M NaNO_3 0.20 M CH_3COOH 0.50 M HCI and 0.10 NaCI 0.10 M KCN For the overall chemical reaction shown below, which one of the following statements can be rightly assumed? 2H_2S(g) + O_2(g) rightarrow 2S(s) + 2H_2O(I) The rate law is, rate = k[H_2S]^2[O_2]. The rate law cannot be determined from the information given. The reaction is second-order overall. The reaction is third-order overall. The rate law is, rate = k[H_2S][O_2]. Which of the following solutions is basic? [OH^-] = 1.0 times 10^-7 M [OH^-] 1.0 times 10^-7 M [OH^-] = 1.0 times 10^-10 M A first-order chemical reaction is observed to have a rate constant of 37 min^-1. What is the corresponding half-life for the reaction? 1.1 min 52.9s 1.6 s 53 min 1.1 s

Explanation / Answer

22. which one of the following substance., will have both dispersion forces and dipole-diplole forces A) H2

b) CO2

C) HC1 -------answer

D) Bcl3

E)Br2

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23. Which one of the following substances is expected to have the lowest melting point.,

A) BrI--------------answer

B) Csl

C) Lil

D) Nal

E) Rb1

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24. Which one of the following is a buffer solution?

A. 0.40 M HCN and 0.10 KCN -answer

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25………….

, which one of the following statements 2H2S(g) + 02(g) i 2S(s) + 2H20(I)

A) The rate law is, rate = 14H2Sf [02].

B) The rate law cannot be determined from the information given.-------answer

C) The reaction is second-order overall.

D) The reaction is third-order overall.

E) The rate law is, rate = k[H2S] [h].

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