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G-12 ဓာတုဗေဒဘာသာရပ် စစ်ဆေးအကဲဖြတ်ခြင်း (Official)
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Which of the following can form a two-acid salt?
What is the pH of a buffer solution containing 0.03 mole of methanoic acid (pKa = 3.8) and 0.3 mole of sodium methanoate per dm3 of solution.
A aqueous solution of a substance is found to have [H3O+] = 2.48 x 10-8 M. The solution is __________.
The conjugate bases for Bronsted-Lowry acids, H2SO4, and will be, respectively.
When the __________ of reactants changes, the position of chemical equilibrium containing gases is effectively altered.
4NH3(g) + 5O2(g) ⇌ 4NO(g) + 6H2O(g)What is the effect of decreasing pressure on the equilibrium position for this reaction?
What is the effect of increasing temperature on the equilibrium position for the reaction (A ⇌ B ΔH = −)?
Predict the effect of decreasing concentration of O2 on the following equilibrium.2Cl2(g) + 2H2O(g) ⇌ 4HCl(g) + O2(g)
The reaction, C2H4(g) + H2(g) ⇌ C2H6 (g), is in __________ chemical equilibrium.