Solvent presents the medium for your solute to dissolve. A higher concentration of solute while in the solvent will increase the rate of reaction. There's a double bond between carbon and oxygen. A result of the difference in electronegativity of C and O, the bond is polar. In aldehydes, https://financefeeds.com/gbp-usd-chart-analysis-bears-exert-pressure-on-key-support-zone/