Question
What is precision and accuracy. Explain.
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Answer
SELF
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The solubility product constant of Ag2CrO4 and AgBr are 1.1 × 10–12 and 5.0 × 10–13 respectively. Calculate the ratio of the molarities of their saturated solutions.
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Dihydrogen gas used in Haber’s process is produced by reacting methane from natural gas with high temperature steam. The first stage of two stage reaction involves the formation of CO and H2. In second stage, CO formed in first stage is reacted with more steam in water gas shift reaction,
$\text{CO (g) + H}_2\text{O (g)}\rightleftharpoons\text{CO}_2\text{ (g) + H}_2\text{ (g)}$
If a reaction vessel at 400°C is charged with an equimolar mixture of CO and steam such that $\text{p}_\text{co}=\text{p}_{\text{H}_2\text{O}}=4.0$bar, what will be the partial pressure of H2 at equilibrium?$\text{K}_\text{p}=10.1\text{ at }400^\circ\text{C}$
→$\text{CO (g) + H}_2\text{O (g)}\rightleftharpoons\text{CO}_2\text{ (g) + H}_2\text{ (g)}$
If a reaction vessel at 400°C is charged with an equimolar mixture of CO and steam such that $\text{p}_\text{co}=\text{p}_{\text{H}_2\text{O}}=4.0$bar, what will be the partial pressure of H2 at equilibrium?$\text{K}_\text{p}=10.1\text{ at }400^\circ\text{C}$
The value of $K _{ p }$ for the reaction,
$
CO_2(g)+C(s) \rightleftharpoons 2 CO(g)
$
is 3.0 at 1000 K . If initially, $P_{ CO _2}=0.48$ bar and $P _{ CO }=0$ bar and pure graphite is present, calculate the equilibrium partial pressures of CO and $CO _2$.
→$
CO_2(g)+C(s) \rightleftharpoons 2 CO(g)
$
is 3.0 at 1000 K . If initially, $P_{ CO _2}=0.48$ bar and $P _{ CO }=0$ bar and pure graphite is present, calculate the equilibrium partial pressures of CO and $CO _2$.
1. What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?
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→2. A sample of 0.50 g of an organic compound was treated according to Kjeldahl's method. The ammonia evolved was absorbed in 50 mL of $0.5 M H _2 SO _4$. The residual acid required 60 mL of 0.5 M solution of NaOH for neutralisation. Find the percentage composition of nitrogen in the compound.
Calculate the degree of ionization of 0.05 M acetic acid if its $pK _{ a }$ value is 4.74 . How is the degree of dissociation affected when its solution also contains
a. 0.01 M
b. 0.1 M HCl ?
→a. 0.01 M
b. 0.1 M HCl ?
The ionization constant of acetic acid is 1.74 × 10–5. Calculate the degree of dissociation of acetic acid in its 0.05M solution. Calculate the concentration of acetate ion in the solution and its pH.
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