Stoichiometry If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times. 100 70 20 10 100 70 20 10 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is 0.2 1.72 0.5 0.58 0.2 1.72 0.5 0.58 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The vapor pressure of liquids of similar chemical nature at any particular temperature __________ with increase in the molecular weight. Increases Decreases Remains unchanged Either A or B; depends on the liquid Increases Decreases Remains unchanged Either A or B; depends on the liquid ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere. 1 1.5 2 0.5 1 1.5 2 0.5 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Atmospheric pressure corresponds to a hydrostatic head of 34 ft ofH₂O 13.6 cms of Hg 13.6 metres of Hg 1 metre of H₂O 34 ft ofH₂O 13.6 cms of Hg 13.6 metres of Hg 1 metre of H₂O ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The heats of vaporisation of CS₂, C₂H₅OH &H₂O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is CS₂ > C₂H₅OH > H₂O H₂O > C₂H₅OH > CS₂ H₂O > CS₂ > C₂H₅OH CS₂ > H₂O > C₂H₅OH CS₂ > C₂H₅OH > H₂O H₂O > C₂H₅OH > CS₂ H₂O > CS₂ > C₂H₅OH CS₂ > H₂O > C₂H₅OH ANSWER DOWNLOAD EXAMIANS APP
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