What will be the effect of increase in pressure on the following system at equilibrium?…
What will be the effect of increase in pressure on the following system at equilibrium? 2NH2(g) N2(g) +…
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The property of calcium chloride which makes it useful as a drying agent is that…
The property of calcium chloride which makes it useful as a drying agent is that it is A.…
Which of the following lowers the activation energy of a chemical reaction?
Which of the following lowers the activation energy of a chemical reaction? A. Freezing mixture B. Reducing agent…
If the solubility of KHCO3 is 0.40 mole dm-3 at room temperature , calculate the…
If the solubility of KHCO3 is 0.40 mole dm-3 at room temperature , calculate the mass of KHCO3…
Which of the following compounds dissolves in water to form a solution with pH below…
Which of the following compounds dissolves in water to form a solution with pH below 7? A. Sodium…
Which of the following is an acid salt?
Which of the following is an acid salt? A. NH4CI B. MgSO4 7H2O C. CH3COONa D. NaHCO3 Correct…
An exothermic reaction is one which involves
An exothermic reaction is one which involves A. attainment of dynamic equilibrium B. loss of heat to the…
30cm3 pf hydrogen at s.t.p combine with 20cm3 of oxygen to form steam according to…
30cm3 pf hydrogen at s.t.p combine with 20cm3 of oxygen to form steam according to the following equation…
Gas molecules are said to be perfectly elastic because
Gas molecules are said to be perfectly elastic because A. they collide without loss of energy B. they…
What volume of hydrogen is produced at s.t.p. When 2.60 g of zinc reacts with…
What volume of hydrogen is produced at s.t.p. When 2.60 g of zinc reacts with excess HCI according…