Concept explainers
Interpretation:
The reason behind non-conductance of
Concept Introduction:
An electrolyte refers to an ionic compound that on solvation in polar protic solvents ionizes to yield cationic and anionic species. The free movement of such ionic species results in the conduction of electricity. For example, when
On the other hand,
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EBK FOUNDATIONS OF COLLEGE CHEMISTRY
- Consider the following data on some weak acids and weak bases: name K₂ formula HNO₂ 4.5 x 104 acetic acid HCH,CO₂ 1.8x105 acid nitrous acid solution 0.1 M HONHYBT 0.1 M KBr Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. 0.1 M KCH₂CO₂ 0.1 M C₂H₂NHCI PH choose one choose one choose one base choose one K name formula hydroxylamine HONH₂ 1.1 x 107 pyridine CH₂N 1.7×10arrow_forwardCalculate the pH of a 0.10 M solution of sodium hypochlorite (NaClO; Ka 2.90 x 10$). Also, calculate the pH after diluting the solution by 10 times.arrow_forwardA scientist is comparing two lakes. She finds that water samples from Lake X have a pH of 3.50 and water samples from Lake Y have a pH of 5.50. Therefore, it can be said that Lake X has a hydronium ion concentration that is times greater than Lake Y.arrow_forward
- Imagine that you have 4 buckets full of dark, muddy water. One bucket is frozen, one bucket is boiled, one bucket is shaken up, and one bucket is passed thru a paper filter. Which bucket is most likely to become lighter in color?arrow_forwardWhat is the base in the following chemical reaction? MgH₂(s) + 2H₂O(l) → Mg(OH)₂(s) + 2H₂(g)arrow_forwardConsider the following data on some weak acids and weak bases: acid base K, K, name formula name formula HCIO 3.0 x 10 8 C,H,NH, 4.3 x 10 10 hypochlorous acid aniline HNO, 4.5 x 10 methylamine CH,NH, 4.4 x 104 nitrous acid Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a 2' next to the solution that will have the next lowest pH, and so on. solution pH 0.1 M CH,NH,CI choose one v 0.1 M KBr choose one v 0.1 M KCIO choose one 0.1 M NANO, choose one v ? Submit Continue HOLIC AL Right Reserved Terms of Use Pivwcy Centerarrow_forward
- Consider the reaction: CH 4( g) + 2O 2( g) → CO 2( g) + 2H 2O( g) Which of the following statements is correct? Oxygen is the reducing agent. The reaction is not an oxidation-reduction reaction. Oxygen is oxidized. Carbon is oxidized. Carbon is the oxidizing agent.arrow_forwardpH = −log[H+] where [H+] is the hydrogen ion concentration, measured in moles per liter. Solutions with a pH-value of less than 7 are acidic; solutions with a pH-value of greater than 7 are basic; solutions with a pH-value of 7 (such as pure water) are neutral. Black coffee has a pH of 5 and pure water has a pH of 7. Compare the pH of each and determine how much more acidic black coffee is than pure water.arrow_forwardFor each of the following pairs of substances • Classify each of the substances. • Compare their approximate pH levels. • Compare their ability to conduct electricity. • Compare their relative hydronium or hydroxide concentration. Comparison of 1.0 mol/L LIOH(aq) and 1.0 mol/L HOCI(aq) • LIOH(aq) is classified as a • HOCI(aq) is classified as a • HOCI(aq) has a + pH than LIOH(aq) has. . нос(ag) is a + electrical conductor than LIOH(aq) is. LIOH(aq) has a : [OH (aq)] than HOCI(aq) has. Comparison of 1.0 mol/L HCN(aq) and 1.0 mol/L KF(aq) • KF(aq) is classified as a • HCN(aq) is classified as a • HCN(aq) has a : pH than KF(aq) has. • HCN(aq) is a + electrical conductor than KF(ag) is. • HCN(aq) has a + [H30+(aq)] than KF(aq) has.arrow_forward
- Reaction 1: NaOH(s) -> Na+(AQ) + OH-(AQ) Reaction two: Na+(AQ) + OH-(AQ) + H+(AQ) + -> H2O(I) + Na+(AQ) Assuming reaction 1 has a enthalpy of 59.12 KJ/mol and reaction 2 has a enthalpy of 46.06 kJ/mol Calculate the change in enthalpy for the reaction shown below NaOH(s) + H+(aq) -> H2O(I) + Na+(aq) Delta H = ?arrow_forward8 g of potassium chloride is dissolved in a quart of distilled water. Calculate the pH value of the solution 1-kb = 1.4 x 10 * %3D 7.9 O 6.1 O 4.5 8.3arrow_forwardThe hydrate is not fully converted to the anhydrous form, which could be a source of mistake. Explain how this might alter the ionic compound's water ratio. This is for hydrated barium hydroxide (Ba(OH)2·xH2O).arrow_forward
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