If a solution has a pH of 2, it can be concluded that it?
A. is a weak electrolyte B. has hyrogen ion concentration of 0.2 mol sm-3 C. is twice as acidic as a solution of pH 1, D. will produce effervescence with magnesium ribbon Correct Answer: Option D D. will produce effervescence with magnesium...Which of the following gases is colourless, odourless and soluble in potassium hydroxide solution?
A. NO2 B. SO2 C. NH3 D. CO2 Correct Answer: Option D D. CO2Which of the following increases as boiling water changes to steam?
A. temperature of the system B. degree of disorder in the system C. number of molecules D. activation energy Correct Answer: Option B B. degree of disorder in the system9.60 g of a gas X occupies the same volume at 0.30 g of hydrogen under the same conditions. Calculate the molar mass of X [H = 1]
A. 8g mol‾¹ B. 16 gmol‾¹ C. 32g mol‾¹ D. 64g mol‾¹ Correct Answer: Option C C. 32g mol‾¹Products
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